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Re:Effects of large vehicles on pedestrian and pedal-cyclist... by yboris on Tuesday August 23, 2022 @10:59PM (#32574485)
Exactly on topic: a philosophy paper "Vehicles and Crashes: Why is this Moral Issue Overlooked?" by Douglas Husak. Author argues that because of the high crash incompatibility with other vehicles (and pedestrians), SUV driving is immoral - imposing an oversized amount of harm to others with no proportional safety for self.

https://www.jstor.org/stable/23562447

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by samatman on Wednesday August 24, 2022 @08:04AM (#32578238)
I'm willing to go along with this so long as blame is apportioned where it belongs: with the Federal government of the United States.

My case is that manufacturing vehicles is a public good. We can talk about restoring city centers to human beings and I'll agree with you all day, but if you want to make the case that motor vehicles, cars included, are themselves immoral, we don't share enough values to have a productive conversation.

So these companies, to provide this benefit, must comply with the law. Consumers have choice in what to buy, but strictly limited by price tag and availability.

Note that we don't have a cultural trend of buying cars with enormous rotating blades on the bumpers. It's not so much because this is illegal, as none are available for purchase.

The government decided, correctly, that the fleet should be more fuel efficient. All the reasons for this are good. So they did the obvious thing: imposed increasing taxes on gasoline.

Ok, let's back up: no, they passed insane regulations leading directly to the prevalence of SUVs and the increasingly hostile road profile of pickup trucks.

The law allows them less fuel efficiency if they make the wheelbase bigger. That's insane. Shall we apportion some of the blame to the car lobby? Ok. Sure.

Ultimately the government is responsible for the law, and the manufacturers are responsible for following it. End the insanity, and the problem goes away over a decade or so.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by enragedcacti on Wednesday August 24, 2022 @08:53AM (#32578768)
> So they did the obvious thing: imposed increasing taxes on gasoline.

I would argue that their hands were somewhat tied because raising the federal gas tax during a recession would have been an extremely unpopular thing to do regardless of the reasoning. Maybe we should expect our representatives to make the right choices anyway but we would probably still punish them for it.

The IRA has a similar problem, its all climate change 'carrots' because all the various forms of carbon taxes necessary to go the 'stick' route would be deeply unpopular despite probably being more economically efficient. I'm sure in a decade we will be talking about all the bone-headed perverse incentives that came out of it, but I'd rather that than us talk about how we missed the chance to pass the biggest climate bill in US history.

All that said, they definitely still could have crafted better legislation that had fewer side effects than the footprint system they went with.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by powerhour on Wednesday August 24, 2022 @10:11AM (#32579696)
> I would argue that their hands were somewhat tied because raising the federal gas tax during a recession would have been an extremely unpopular thing to do regardless of the reasoning.

Hopefully in the next boom time we'll do the sane thing and finally tie the gas tax to inflation, or at least increase it at the same rate as we do federal wages. Making it a fixed amount of pennies is about the dumbest thing we could have done.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by sidewndr46 on Wednesday August 24, 2022 @08:16AM (#32578365)
I don't agree that consumers are strictly limited by price. It's been the norm to finance vehicles with loans for a while now. So much that dealerships make more on financing than they do on selling cars in some cases.

As profit in the industry has grown, so too has the amount of available credit. We now see 7 year loans on vehicles becoming more common.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by gruez on Wednesday August 24, 2022 @08:34AM (#32578543)
>I don't agree that consumers are strictly limited by price. It's been the norm to finance vehicles with loans for a while now.

The monthly payments are dictated by the purchase price and interest rate. Guess who controls the interest rates?

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by sidewndr46 on Wednesday August 24, 2022 @08:42AM (#32578652)
I don't actually know who sets the industry standards for automobile financing.

But the point you're making is missing something: term of the loan. That's the easy way to get the monthly cost down.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by samatman on Wednesday August 24, 2022 @08:56AM (#32578817)
The price of anything expensive includes the cost to obtain enough money to buy it.

When I said "price" that recognizes the fact that cars are financed. It's like the price of a home that way, you're not disagreeing with anything, you just didn't know what that word meant in this context, for some odd reason.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by sidewndr46 on Wednesday August 24, 2022 @11:45AM (#32580968)
Yeah, the fact here is obviously I can't English. Not that you ignore the reality that consumers consider a car purchase a "$X per month" and not as an actual cost. Every consumer is perfectly educated and diligently computes the total cost of ownership of every purchase.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by radu_floricica on Wednesday August 24, 2022 @02:51AM (#32575729)
Vans are nightmare stuff for motorcyclists. Hitting a compact car from most angles means rolling over it. Hitting a van from any angle is instant SPLAT - all potential energy gets instantly converted into damage.

We don't have SUVs here (Eastern Europe), but I think they're a closer to vans than to compacts.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by leto_ii on Wednesday August 24, 2022 @03:32AM (#32575984)
Radu, I'm Romanian too (and assuming based on your name you're Romanian), we have lots of SUVs. Maybe you're thinking of something else? Maybe pickup trucks?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by radu_floricica on Wednesday August 24, 2022 @04:48AM (#32576604)
I meant F-150 style cars. They're next level - much taller and wider than what we have here. Small 4x4s like Toyota RAV4 are closer to compacts, and you still have a fair chance to roll over if you hit them in the front.

I guess we do have larger 4x4s like Land Cruiser, forgot about them. They're somewhere in between? Wouldn't want to hit one, but it's not a guaranteed "splat".

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by mitchdoogle on Wednesday August 24, 2022 @09:46AM (#32579393)
When articles like this talk about SUVs, in includes autos like the RAV4. Those smaller SUVs are one of the biggest growth areas for manufacturers
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by HailTheGreenOne on Wednesday August 24, 2022 @03:21AM (#32575927)
What do you mean we don't have SUVs in Eastern Europe? Where would you have to live to think that?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by egman_ekki on Wednesday August 24, 2022 @03:36AM (#32576010)
Guessing by the name, perhaps Romania. Maybe they mean large ones like Ford F150? otherwise (Eastern) Europeans love their SUVs for sure, 45% of new vehicles bought in Europe are SUVs.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by VBprogrammer on Wednesday August 24, 2022 @04:27AM (#32576427)
I think it's more of a sliding scale than a rigid dichotomy. The car we drive might reasonably be described as an SUV, the Seat Tarraco.

As a pedestrian or a cyclist I'd take my chances on against it before something like the Chevy Suburban any day of the week.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by orangepurple on Wednesday August 24, 2022 @10:06AM (#32579645)
Getting hit by a Romanian Dacia Sandero is just as bad as getting hit by a Chevy Suburban at the same speed.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by VBprogrammer on Wednesday August 24, 2022 @10:49AM (#32580180)
If that's the case then presumably getting hit by a Nissan Leaf at the same speed is just as bad and the whole premise is bullshit?

I haven't seen one in person for a while but but a Chevy Suburban is practically flat until 4ft off the ground. A Dacia Sandero isn't nearly that tall. I find it hard to believe that it is the same as a Sandero at least at potentially survivable speeds around 30mph.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by buscoquadnary on Wednesday August 24, 2022 @09:32AM (#32579212)
Sorry dude I've got 4 kids, there isn't a sedan out there that I can fit 4 car seats in, and still have room for a driver and passenger.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by neon_electro on Wednesday August 24, 2022 @09:45AM (#32579382)
But at least a 6 seat Tesla Model X would probably hurt pedestrians less compared to a “van”?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by krnlpnc on Wednesday August 24, 2022 @09:53AM (#32579468)
Be serious. That's a $100k car. This person has 4 kids.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by buscoquadnary on Wednesday August 24, 2022 @10:21AM (#32579815)
This is one of the most SV answers I've ever heard.

Sorry not all of us live in a place where a $100k electric car is feasible or would work well, or I could even get one.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by mc32 on Tuesday August 23, 2022 @11:26PM (#32574649)
There are three trends: bigger mass, larger sizes and taller vehicles.

Which one of the above is the most consequential?

I'm guessing height. at 2500 or 5000 lbs, neither is going to be pleasant when you bang in to it. size maybe there is more surface area to get hit by, but that's unlikely to be significant.

mass does influence stopping distance though, so that could be, but at the same time we now have large disc brakes with anti-skid.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by asdff on Wednesday August 24, 2022 @12:31AM (#32575007)
Also, shape. Go look at the front end of a car like a ford F150. The hood is flat and sits 4 feet high. Now go look at a more compact car like a prius. The hood is low, and is angled like a wedge smooth into the windshield. When a prius hits you, its liable that you will just roll up and off of it and not get much of the force from the impact as a result. When an F150 hits you with its 4 foot tall wall of a grill straight in your chest, I don't think you will be rolling up and over. Maybe your head would just pop off from the kinetic force, sparing you from a slower death?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by musha68k on Wednesday August 24, 2022 @12:51AM (#32575135)
I once managed to barely jump and slide over the hood of a car that came up behind me and turned - at considerable speed - right into the pedestrian crossing I had been traversing on a green light. The driver looked right through me, didn’t even realize it until my - corner of the eye induced - leap. I would be dead for 15 years now if that would have been a SUV. Lots of people really don’t seem to have a good grasp of the sheer physics involved while driving these tanks especially.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by a4isms on Wednesday August 24, 2022 @09:13AM (#32579013)
> driving these tanks

They are not tanks. They are suburban armoured personnel carriers.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by mc32 on Wednesday August 24, 2022 @11:28PM (#32589123)
Not even. You see them in cities themselves. Like why? Finding large parking lots is hard and it’s by definition urban and you can’t possibly have mud or ditches to traverse in your 4x4!
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by _Wintermute on Thursday August 25, 2022 @05:06AM (#32591329)
Even worse is that they're becoming increasingly common in European cities that really don't have much space.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by jbay808 on Wednesday August 24, 2022 @01:30AM (#32575284)
Pedestrian visibility is also compromised. My SO is not a tall person. We've tested - she's quite invisible standing in front of these trucks and SUVs, because their front hood is so high and square. A small child would be impossible to see even some meters away. Worse if the driver of the vehicle is not tall.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by masklinn on Wednesday August 24, 2022 @04:42AM (#32576557)
> A small child would be impossible to see even some meters away.

A US local News did a segment on that recently, they lined up sitting children in front of a truck, I think only the 7th or 8th child in the row was visible and even then barely. You basically can’t see anything shorter than the hood for 10 feet in front of you, and that’s assuming you look at the road from over the driving wheel not between the dash and wheel arch.

Edit: turns out “recently” is optimistic (or more likely this is a recurring segment), found this from 3 years back: https://youtu.be/NDH3FDfVQl0

Tho it’s not the segment I was thinking of.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by dont__panic on Wednesday August 24, 2022 @10:04AM (#32579605)
This also creates a huge problem for visibility around parked cars. Most US cities I've visited allow parking right up to pedestrian crosswalks on corners (yes, I know this is stupid and dangerous, but the street parking lobby is very strong here). When someone parks a massive truck or a huge SUV on the street, pedestrian, cyclists, and even cars trying to cross the street are stuck gambling on a blind spot.

This shouldn't even be a problem; these massive vehicles literally don't fit in street parking spaces, where they're designated with paint or verge on a bike lane.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by dsq on Wednesday August 24, 2022 @04:27AM (#32576425)
I once had a Toyota land cruiser start climbing onto the hood of my Hyundai accent because the driver couldn’t see me over the hood of his engine as he driving up out of a parking garage.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by dfxm12 on Wednesday August 24, 2022 @09:21AM (#32579099)
At some point, there needs to be a separate driving test for these gigantic vehicles. A guy on my block is always parking halfway on the curb and has hit more than a few cars when parking. It really takes a different set of skills than driving a regular sedan or maybe even a crossover SUV. Never seen him haul or tow anything, either.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by powerhour on Wednesday August 24, 2022 @10:16AM (#32579743)
Making driving tests more strict and mandating a refresher every few years would probably go a long ways towards creating more walkable and bikeable cities. Some folks would choose to drive unlicensed, of course, but it'd be silly to let that imperfection destroy the good.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by msrenee on Thursday August 25, 2022 @06:55AM (#32592042)
I've hauled all sorts of trailers over the years and driven F750s. They always belonged to friends or work though. When I finally bought my own little 2 horse a ways back, I was just kind of floored that I didn't have to prove to anybody that I knew what the hell I was doing with it. Not long after, I was driving through the mountains in the southwest and realized that I was surrounded by retired people who didn't have to prove they could safely drive their giant RVs.

Don't get me started on cheap CDL training programs.

Driver's testing in the US is a joke.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by bitexploder on Wednesday August 24, 2022 @09:36AM (#32579271)
As a driver of an oversized vehicle I am always paranoid about driving in the city and almost never do it in my truck. If you walk in front of my truck I literally cannot see you. The tires are almost 4 ft tall and it is easily possible to simple drive over smaller cars. I keep this diesel monstrosity where it belongs, out in nature off roading and buying groceries in my local suburb.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by dont__panic on Wednesday August 24, 2022 @10:08AM (#32579660)
> buying groceries in my local suburb

Ah yes, the natural environment of the 4ft tall tired diesel monstrosity truck.

I understand that you want this vehicle for offroading. But in my opinion it should be treated like a dirt bike or a 4 wheeler: you should have to tow it to the trails. If you live in the wilderness, feel free to drive it right onto dirt roads and trails. But it just shouldn't be allowed at all in a suburban or urban environment. A truck like that cannot possibly fit in the parking space at the grocery store. Not being able to see over the hood is a danger to anyone walking or biking in your suburb, and probably contributes to the fact that nobody walks or bikes in your suburb.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by bitexploder on Wednesday August 24, 2022 @10:32AM (#32579973)
I was tongue in cheek. It is not even very useful for off roading except out in very open areas, which it does do okay at, it has a great suspension setup. Too wide to fit on most of the mountain trails here in Colorado, though. And it does fit in a parking spot, if you are very careful, but I generally just park away from other vehicles so no one has to deal with it. I drive smaller vehicles in congested areas. And FWIW a ton of people cycle in my area and I am almost always one of the few people giving cyclists appropriate space out here.

I do at least ponder the moral implications of it. It was fun for a while, I will probably sell it soon, it is rather impractical :)

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by dont__panic on Wednesday August 24, 2022 @11:01AM (#32580360)
As a former Coloradan myself, up your off roading game and get yourself a mountain bike! Especially if you live on the Front Range, there are a ton of trails much closer to home. You might even be able to bike to them!
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by bitexploder on Wednesday August 24, 2022 @11:29AM (#32580696)
Yeah, we do all our "real" Colorado activities in our 4Runner and or with our off road camper. My son loves mountain biking when we go camping. I just don't enjoy mountain biking, but I do live in Golden where you have some great trails minutes away. In all seriousness I actually just use the truck to tow trailers and move cars and other things around, and occasionally take the camper to the more open areas :)
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Gibbon1 on Wednesday August 24, 2022 @04:18AM (#32576323)
A complaint I have and I've heard from others is the airbags in the A pillars are a menace to pedestrians because they block the drivers view.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by johnwalkr on Wednesday August 24, 2022 @06:00AM (#32577229)
Yes, cyclists too. When approaching an intersection which is not at right angles, it can be especially dangerous for cyclists when the speed of the car and cyclist is just right for the cyclist to be obscured for a long period of time. [1]

I also noticed when driving a certain Kei car in Japan with no a-pillar airbags and a so-called “split” or “double” a-pillar with a window between 2 skinny pillars, that the visibility is so much better. It feels great when you realize you don’t need to move your head around at all to see past them, the parallax affect of having 2 eyes makes them basically disappear. [2]

[1]https://usa.streetsblog.org/2016/12/02/study-diagonal-inters...

[2]https://en.m.wikipedia.org/wiki/Daihatsu_Tanto#/media/File%3...

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by DoughnutHole on Wednesday August 24, 2022 @08:59AM (#32578852)
Tom Scott has a good video for anyone looking for a visual of this phenomenon:

https://www.youtube.com/watch?v=SYeeTvitvFU

He shows off a rural (and thankfully now fixed) crossroads in the UK with seemingly great visibility and an unusually high rate of cyclist fatalities - the roads are at such an angle that any reckless driving speed can align with a reasonable cycling speed such that the driver's door pillar can block visibility of a cyclist with right of way right up to the point of impact - and it's compounded by the fact that the car is necessarily approaching from behind the cyclist, so a passing cyclist will be unaware of the danger possibly until they get hit.

Of course if drivers in the area actually followed the stop signs no one would get hit - but if you watch the video in a five minute period genuinely only about half of the cars passing through actually come to a complete stop at the stop sign. You need more than signage and quietly hoping that people to do the right thing.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Prcmaker on Wednesday August 24, 2022 @04:41AM (#32576554)
I've had an entire Mazda 2 hidden from view in a roundabout, by the A-pillar and associated airbag of a VE commodore. Pedestrians and bicycles required much more effort to see in that car than any other I've ever driven.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by saiya-jin on Wednesday August 24, 2022 @05:47AM (#32577115)
A good rule of thumb is, if you are in dense complex traffic, to move your head around a bit when looking out and in the mirrors. Better coverage of dead angle in side mirrors, adding a bit more 3D into perspective.

Its sort of defensive driving - expect troubles, idiotic clueless drivers, people having heart attack or just turning head to yelling kid on backseat / nice lady walking nearby. Can't save it all but definitely helps.

Driving in country where people, when averaged, drive like crap is a good learning experience (albeit stressful). For me, whenever I enter France from Switzerland (on average 1x per week), its night and day and training (with cursing) resumes.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Prcmaker on Wednesday August 24, 2022 @06:40AM (#32577527)
The density or complexity of traffic really has nothing to do with whether a car has been designed in such a way that it significantly impedes vision where it is most critical. In this case, a quiet roundabout with one other car almost directly in front.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by stef25 on Wednesday August 24, 2022 @02:58AM (#32575775)
Some passenger cars also have a nifty feature where if an impact is detected, the hood on the side of the windshield is instantly propped up by some springs to provide a cushioning effect to whoever ends up on the hood.

I've seen it action when a guy who I was riding motorcycles with got hit on the side by a car (his fault, low speed, he was fine). My car also has the feature.

Obviously impossible if the hood's too high like with an SUV or pickup.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by bzzzt on Wednesday August 24, 2022 @07:43AM (#32578044)
The 2012 Volvo V40 (now discontinued) did one-up that by including an airbag under the hood which covers the A-pillars when detecting pedestrian impact.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by nostromo on Wednesday August 24, 2022 @02:41AM (#32575660)
The Tundra now has a front camera so you can see what’s in front of you.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by silon42 on Wednesday August 24, 2022 @08:53AM (#32578771)
I've had an idea for a long time that A pillars should have screens that show through them (in addition to reverse cameras above).
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @08:19AM (#32578394)
I drove a Prius only once, for around ten minutes. I used to dislike the Prius, but following that short experience I now hate it from the deepest of my heart.

The Prius is an abomination, because it is too low to be comfortable and because of its wrong, arcuate shape. The natural and right shape for a car includes only vertical walls and horizontal surfaces, apart from the windscreen which is allowed to be slanted, but not too much.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by kqr on Wednesday August 24, 2022 @01:59AM (#32575425)
"Just roll up and off of it" makes it sound like a pleasurable experience. The majority of serious injuries happen not upon collision with the vehicle, but when hitting the ground afterwards. This applies for any vehicle shape, but in different ways.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by atoav on Wednesday August 24, 2022 @02:46AM (#32575687)
Yeah, but landing on the round hood of a VW Polo vs being hit by the equivalent of a rolling brick wall makes a difference.

If you look at the formula for acceleration (a = ∆v/∆t) and acceleration force (F = a⋅m) the only two things we can truly influence here are speed (slower collisions are less dangerous) and time (collisions where the force transfer takes longer produce less force).

The latter is what makes the difference between getting hit with an cushion and an equally heavy rock. The same difference exists if you run against a brick wall and against an angled grassy hill (or: a bendy car hood). Not only will the elastic hood (and the roll) absorb part of the collision energy, the angle of the hood stretches the acceleration over longer time and reduces the force transfered on your body.

So if you get the choice as a cyclist, the choice is pretty clear.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Ygg2 on Wednesday August 24, 2022 @03:45AM (#32576059)
Mass also affects force transferred, during contact.

Newton's 3rd law, implies the more mass you have the less recoil you feel.

For example hitting a massive box will hurt a lot more than a light box, because light box will get some acceleration of its own vs massive box.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Xylakant on Wednesday August 24, 2022 @03:58AM (#32576154)
Though at the mass ratios of car vs pedestrian/cyclists, the difference on the car side makes no significant effect. It doesn‘t really matter if the ratio is 1:10 in favor of the car or 1:20. The acceleration that the car will feel is negligible either way.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by atoav on Wednesday August 24, 2022 @07:53AM (#32578138)
I neglected mass here, because I don't think it really makes much of a difference in the deadliness of the collision (car is always much heavier than cyclist).

One thing it would definitely affect tho is the time within which the car could brake, provided they react in time.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by NegativeLatency on Wednesday August 24, 2022 @02:19AM (#32575537)
Been hit a couple of times, I’d be dead if I went under instead of rolling over the cars
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by SketchySeaBeast on Wednesday August 24, 2022 @09:17AM (#32579056)
> The majority of serious injuries happen not upon collision with the vehicle, but when hitting the ground afterwards.

That claim right there is begging for a source. It's hard to imagine landing from a person's height is worse than hitting a brick wall moving 40 km/h, unless that brick wall also threw you more than 6 meters up into the air, which point at which you'd be moving faster than 40km/h when you hit the ground.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by InitialLastName on Wednesday August 24, 2022 @12:53PM (#32582230)
A few months ago, I saw a pedestrian get hit by an SUV going ~40mph (64km/h). He flew far enough that when he came to a stop he was a good ways down the road. If you made it through the sudden acceleration to 40mph, I could also see "the road braking you from 40mph to zero" doing some damage.

As another example, here's a locally-high-profile crash [0] (the driver, a city councilwoman and the daughter of the county commissioner, left the scene and didn't report the crash for hours). Red lights and sightlines aside, even though not much momentum is imparted to the cyclist, the crash was enough to flip him over and knock him into the air, which changes all of the calculus for landing damage from what normally happens when you fall off a bicycle. If you land straight down on your head, it might be worse for you than getting hit in the torso at a higher speed.

[0] Content warning: this is a video of someone getting hit by a car https://youtu.be/X7V_H9bADDM?t=54

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by wefarrell on Tuesday August 23, 2022 @11:50PM (#32574782)
I got into a head on collision with an SUV that came off two wheels while rounding a curve and crossed the yellow divider right into my little car. In that case it was definitely the height that did us in.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by timellis-smith on Wednesday August 24, 2022 @02:56AM (#32575763)
Glad to hear that you lived to tell the tale.

Sounds like a horrendous collision.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by wefarrell on Wednesday August 24, 2022 @11:43AM (#32580909)
My car crumpled perfectly and my only injuries were scrapes from the airbag. The other driver broke a few ribs.

I will never forget the split second I recognized there was a huge mass of metal coming straight at me at a high speed and I resigned to the fact that it would probably mean life altering injuries. Good thing I wore my seat belt!

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by NBJack on Wednesday August 24, 2022 @08:19AM (#32578392)
Note that minivans have been around longer than SUVs, but do not appear to be as disproportionate in fatalities. I suspect part of this is that they are typically lower to the ground and, more importantly, tend to only weigh about 500 lbs more than the average car at ~4500 lbs. Contrast this with full size SUVs, which are often taller and weigh on average closer to ~5900 lbs.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by bluGill on Wednesday August 24, 2022 @09:08AM (#32578962)
The Chevrolet suburban from 1947 was clearly a large SUV. (the suburban was introduced in 1935, but you could argue those models were station wagons, by 1947 they were clearly SUVs). The VW microbus - was from 1950.

The minivan didn't become popular until 1980s, while SUVs remained the domain of niches like families too large for a minivan, or those who regularly drove off road for another decade or two. However the SUV is clearly the older of the two.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ajuc on Wednesday August 24, 2022 @12:06AM (#32574862)
E=mV^2/2

60 km/h car will kill you either way, 1 km/h car won't kill you either way, but somewhere in between there's a velocity range where a SUV will kill you and a compact car won't - simply because of the mass difference. I'd argue it's the velocity range in which a lot of collisions happen (especially in city traffic).

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by s1artibartfast on Wednesday August 24, 2022 @01:15AM (#32575233)
This is the wrong way to think of it. At some point the mass is irrelevant. If an inelastic lead object the size of a car hits you, the energy transfers is the same as if a lead 747 hits you at the same speed.

Both objects have an overwhelming amount of energy and momentum compared to a nearly stationary 100 kg person. They'll transfer enough energy to bring the person up to their speed, likely mangling them in the process.

Trauma depends on how quickly this energy is transferred to the individual.

More to your point, both a car and a truck have more than enough energy to not be meaningfully slowed down by a pedestrian. The difference is strike location, contact area, and crumple zones to slow the transfer.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by vihren on Wednesday August 24, 2022 @12:26AM (#32574977)
Its the momentum that kills you p=mV, not the kinetic energy. So I would guess that mass ia much more important.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by tzs on Wednesday August 24, 2022 @03:21AM (#32575926)
A typical locomotive at 1 mph has more momentum than a Ford F-150 at 45 mph, but the latter is far more likely to kill you in collision so it doesn’t look like it is momentum that kills.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Ma8ee on Wednesday August 24, 2022 @03:17AM (#32575895)
Why would that be? Isn't it the energy spent tearing your body apart that is relevant?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @08:31AM (#32578514)
You are both wrong, It's the acceleration that kills you.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ajuc on Wednesday August 24, 2022 @09:47AM (#32579409)
Doubling the mass of the car assuming everything else (crumple zones etc.) stays the same - doubles the acceleration experienced by the pedestrian.

    X_p0 = X of the pedestrian before collision
    X_c0 = X of the car before collision
    X_p1 = X of the pedestrian after the collision
    X_c1 = X of the car after the collision
    m_ = mass
    v_ = velocity
    a_ = acceleration
    t = time

    //conservation of momentum:
    m_p * v_p0 + m_c * v_c0 = m_p * v_p1 + m_c * v_c1
    m_p * (v_p0 - v_p1) = m_c * (v_c1 - v_c0)
    v_p1 - v_p0 = m_c * (v_c0 - v_c1) / m_p

    // a = delta v / t
    a = (v_p1 - v_p0)/t = m_c * (v_c0 - v_c1) / (m_p * t)
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by SketchySeaBeast on Wednesday August 24, 2022 @09:48AM (#32579416)
Acceleration, which is caused by a transfer of energy?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by 2rsf on Wednesday August 24, 2022 @09:29AM (#32579187)
It is not just the mass, the design is critical as well. Check pedestrian impact tests, on regular cars pedestrians can roll over while with tall cars or SUVs they are simply splashed against it.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by mc32 on Wednesday August 24, 2022 @12:23AM (#32574954)
I think that band where the light car is not lethal is a narrow bad. I could be wrong but I have a feeling it's sitting up high in an SUV/truck that is causing some of this.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by causi on Wednesday August 24, 2022 @08:29AM (#32578501)
Don't forget that crashes aren't just an oblivious driver smashing into a pedestrian at full speed. Many, perhaps a majority involve some degree of braking.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @08:23AM (#32578429)
I'll always choose height for my car because I want comfort.

My top priority when driving is safety for everybody, as in doing all my best to prevent accidents.

My second priority is personal comfort, which helps in guaranteeing the first priority to be respected.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by yread on Wednesday August 24, 2022 @03:04AM (#32575813)
Higher weight also requires thicker pillars so that the car doesn't smush you when it rolls over leading to worse visibility
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by donw on Wednesday August 24, 2022 @12:21AM (#32574944)
The big problem -- pun intended -- is that vehicles are de facto required by law to be huge.

Imagine if we had cars that were built like cars from the 80s -- smaller, lightweight, tons of visibility, minimal equipment -- but with modern engine technology and a few of the electronics that don't add much weight, but add a ton of functionality (like 360-degree cameras).

I'll take the road noise, less interior comfort, and all the rest, just for a basic... car.

I'd love to have a modern reboot 80s compact pickup that wasn't a bloated mess like the new Ford Ranger.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by jackvalentine on Wednesday August 24, 2022 @12:23AM (#32574958)
They're not required by law to be huge - they're required by law to be safe, which being larger ends up being a side effect.

Sure a 2022 Toyota Corolla is gigantic compared to a 1985 Corolla, but it's nothing compared to a 2022 F150. The best selling 'car' in North America. I know which one I'd prefer to be hit by.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Ferrotin on Wednesday August 24, 2022 @01:20AM (#32575245)
That means yes, they are required by law to be larger.

It was also because a fuel economy rule change.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Temporary_31337 on Wednesday August 24, 2022 @01:47AM (#32575359)
Have you even seen a Smart car or a Toyota Aigo which has all the required safety parts? So tell us exactly which safety parts are so huge again ?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by prmoustache on Wednesday August 24, 2022 @04:09AM (#32576234)
They are respectively larger than cars that had similar interior space 40 years ago.

Saw a review of an old peugeot 505 wagon. It was way smaller than the current Toyota Camry but you could fit 8 persons and still have larger storage capacity.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by hawski on Wednesday August 24, 2022 @04:27AM (#32576429)
At the same time Toyota Aygo is no longer produced. There is now a Toyota Aygo X - a crossover/mini-suv. From what I have read companies stopped producing most of those smallest cars, because to make good margins within what is required by law in terms of safety and CO2 emissions it does not make much sense to produce small cheap cars anymore.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by froh on Wednesday August 24, 2022 @05:56AM (#32577194)
where did you hear that from?

The A-Segment is well alive and thriving: https://en.wikipedia.org/wiki/A-segment

What I see instead is very small electric vehicles entering the market from new manufacturers --- the market entry hurdle was not the vehicle safety, it was mastering the EURO-6,7,8 and California environmental norms with such a small engine.

I'd love to get one of those, or their van equivalents, rather, alas they're rarely exported outside Japan https://en.wikipedia.org/wiki/Kei_car

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by hawski on Wednesday August 24, 2022 @07:07AM (#32577747)
Toyota Aygo is no longer produced. Replaced by Aygo X - a somewhat bigger car.

Renault Twingo is produced, but is not offered in some countries (I know about UK and Poland).

Peugeot 108 is no longer produced and AFAIU a successor was cancelled. Same thing for sibling Citroen C1. Aygo was also a sibling model.

Suzuki Ignis is a crossover now.

Skoda Citigo is no longer produced. Its sibling model VW Up is still produced, but other sibling Seat Mii is not.

Smart is a bit in a class of its own. It is not cheap though. Toyota had iQ in this class - it is no longer produced.

That leaves us with Hyundai i10 and its sibling Kia Picanto, Fiat Panda which is just a bit bigger then usual in the class, Fiat 500, aforementioned VW Up and Mitsubishi Mirage (also called Space Star in some countries). For me this is a sign of the class being less represented. I think it can go in other direction when electric cars will finally be cheaper, but it will not happen for a couple of years.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by fomine3 on Wednesday August 24, 2022 @08:26PM (#32587748)
> Renault Twingo is produced, but is not offered in some countries

This argument is applied for every vehicle except extremely major one, like Corolla?

> Suzuki Ignis is a crossover now.

It's actually just a bit high A-seg hatchback. Its weight is like 900kg. I've driven it and like it because I don't need SUV w/big tires (unnecessary expensive!) but just need a bit high.

I think every manufacturers just want upselling in current market situation, and A-segs needed to be cheap. VW and Skoda that you pick looks good example. Not due to safety.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by froh on Wednesday August 24, 2022 @03:31PM (#32584587)
Covid 19 and the western economic crisis certainly had an impact on the a-segment, and vendors have also phased out ICE models indeed. however the "couple of years" is a small number and all vendors are working their ways to provide BEVs into that segment.

also the context of my statement is this thread, and a comment claiming vehicle safety being the problem of the A segment, to which your comment seemed to suggest "yah it's also in decline, see: ..."

to which I dare to claim: nope, it will happily come back as the economy recovers and the top mass producers (TMC, VW, Stellantis, RNM alliance) master BEVs.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by jackvalentine on Wednesday August 24, 2022 @01:29AM (#32575281)
> That means yes, they are required by law to be larger.

Larger, but not huge as I said. The gigantism of the best selling cars of 2022 isn't because of the law it's because of consumer preference to the detriment of everyone else.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by timellis-smith on Wednesday August 24, 2022 @03:01AM (#32575790)
I live in the UK, and the last car I bought was a SEAT Ibiza with a 3 cylinder 1 litre engine. I get 4.5l/100km or 52 mpg on long trips. 98% of the time my engine does under 2500 rpm.

I have absolutely no need of anything bigger and my car has all the comforts I require. I was also able to buy it for cash.

I've never quite understood the desire to own a large car with all its concomitant costs.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by gadders on Wednesday August 24, 2022 @06:13AM (#32577328)
How large is your family?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by timellis-smith on Wednesday August 24, 2022 @06:59AM (#32577685)
Just one kid.

To be clear we do own another car which is an old Skoda Octavia Greenline also bought for cash. Its efficiency is pretty incredible even if it is a 'dirty diesel'.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ridgered4 on Wednesday August 24, 2022 @10:09AM (#32579668)
It occurred to me a few weeks ago that it was kind of nonsensical that there are tons of safety requirements that have added a lot of cost and complexity to a basic car (arguably this is a very good idea) yet you can still ride a motorcycle around legally. I don't know about you but I'd rather drive to work in a 1980 honda civic than a motorcycle, if only to stay out of the rain. But it isn't legal to sell a 1980s style civic anymore.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ramraj07 on Wednesday August 24, 2022 @12:23AM (#32574955)
Uhm not seeing your point? Cars are made to keep who’s inside alive, and you can’t do that with paper thin walls that made the original mini.

No law makes an SUV a requirement though. That’s just people getting greedy while the roads are getting larger allowing them to see no difference driving large vehicles.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by buscoquadnary on Wednesday August 24, 2022 @09:36AM (#32579272)
I live in an area that is sparsely populated and has hard winters, oftentimes plowing isn't going to happen soon if it happens on the day of a snow storm. I also have several children that I need to transport to various places.

I have yet to find a mini-van that is able to handle appropriately in the snow and conditions I am likely to face, and a smaller vehicle can't carry my family.

Just because you can't think of a reason doesn't mean someone who does something you disagree with is morally deficient.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by joadha on Wednesday August 24, 2022 @10:17AM (#32579761)
TIL that only two minivans (the Sienna and the Pacifica) offer AWD. That surprised me!

And incidentally (getting back to the original point of the article), both models feature a pretty flat front-end for a minivan. I wouldn't be surprised if they are considered among the least pedestrian-safe vehicles of the class.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by KennyBlanken on Wednesday August 24, 2022 @02:22AM (#32575550)
European cars have to pass Euro-NCAP crash standards which include pedestrian safety tests. It's not the mass or overall size that's dangerous to pedestrians, it's the nose/hood profile and height.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ajuc on Wednesday August 24, 2022 @04:53AM (#32576643)
Smart is smaller than most cars made in 80s, and modern compact/city cars are still reasonably light. It's just that somehow SUVs became fashionable. I can't understand why.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @08:33AM (#32578532)
> Smart is smaller than most cars made in 80s

Well, if you compare a car for a couple to a car for a family...

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ehaliewicz2 on Wednesday August 24, 2022 @02:52AM (#32575737)
My 2021 miata isn't really much larger than a 1989 miata.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by wiredfool on Wednesday August 24, 2022 @06:54AM (#32577644)
It weighs 300lbs more, or 15%.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ehaliewicz2 on Wednesday August 24, 2022 @07:16PM (#32587158)
In terms of mass it weighs more (depending on model, it can be as little as 200lbs more), but it's not actually much larger in terms of size. I think it is actually smaller in some dimensions.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by asdff on Wednesday August 24, 2022 @12:33AM (#32575030)
I have a car like that. 2017 toyota yaris. 13 feet long and 2300 lbs like a toyota from 1995.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Broken_Hippo on Wednesday August 24, 2022 @06:26AM (#32577434)
Modern sedans are way smaller than the sedans of the 80's: Have you seen a Ford Crown Vic from that time frame - or driven one? (my dad had an 85, and was the first car that I was allowed to use).

Modern cars aren't required to be huge, in other words.

Car companies profit on SUV's more than smaller cars, though, so that's what they push. It helps that they are popular - which is realistically what has happened to the Ford Ranger. Larger bodies are more popular.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @08:37AM (#32578584)
> Imagine if we had cars that were built like cars from the 80s ...

I'd happily but such a car for the city, if it was cheap enough to be able to afford a more serious car for long journeys.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by cozzyd on Wednesday August 24, 2022 @10:12AM (#32579709)
How often do you go on long journeys? Rental is an option...
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @10:25AM (#32579882)
No thanks, not for me. I like having my car sitting in my driveway for when I need it.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by throwaway0a5e on Wednesday August 24, 2022 @08:47AM (#32578704)
You probably wouldn't know the difference between a 1980s car and a modern car if the modern amount of NVH reduction was thrown at the 1980s car.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @09:01AM (#32578883)
As long as the interior is large enough...
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ars on Tuesday August 23, 2022 @11:57PM (#32574810)
Let's say we magically got rid of all SUV's. Then Douglas would find the next largest car and say the same thing.

You need to have some kind of line that distinguishes moral from immoral, if you can't do that, then your calculation is risk based, not morality.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by DangitBobby on Wednesday August 24, 2022 @12:25AM (#32574966)
Minimizing harm by not maximizing self interest is a moral decision. It's not defined by the ability to make it binary.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by s1artibartfast on Wednesday August 24, 2022 @01:56AM (#32575409)
How low is low enough? Don't drive? Don't bike? Don't eat?

For that matter, is it immoral for a pedestrian walk down the street because they have some low probability of harming an SUV driver when they splatter off the front end?

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Mordisquitos on Wednesday August 24, 2022 @03:44AM (#32576056)
How high is too high? Can you have headlights so bright they blind other drivers? Can you drive an armoured vehicle with tracks that could crush other vehicles? Can you have circular saws on the sides of your car to deter careless fender benders?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by rdtwo on Wednesday August 24, 2022 @12:23AM (#32574952)
SUV problem is mostly a grill size problem. They are designed to be aggressive and kill, you could drop them lower increase visibility and improve pedestrian impact like they do in Europe
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by ocbyc on Wednesday August 24, 2022 @12:37AM (#32575054)
They're designed to kill?
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Gigachad on Wednesday August 24, 2022 @01:35AM (#32575301)
I wouldn't be surprised if there was some perhaps unconscious trend of buyers picking more aggressive looking cars that are more likely to kill on impact.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by Fricken on Wednesday August 24, 2022 @04:32AM (#32576474)
There is and car marketers have known it for a while.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @08:35AM (#32578550)
I choose my Jeep Renegade for the interior space.

And I drive in order to reach my destination, in peace and relaxed, not to impact anybody, and certainly not to kill.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by rdtwo on Wednesday August 24, 2022 @09:38AM (#32579291)
Yeah it’s a design trade off. Buyers prefer the aggressive look of large grills but that shape decreases visibility and is more likely to kill pedestrians on impact. That trade off is pretty well known. Without government regulations there is little value to car manufacturers to design vehicles that don’t kill pedestrians on impact so they choose designs optimized to sell that also kill more.

There was a recent case where a vehicle designed for the European market actually had the pedestrians protection hood design stripped off and replaced with more aggressive and deadly styling for the US market.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by amrocha on Wednesday August 24, 2022 @02:40AM (#32575648)
Just look at dodge marketing. They know they're making killing machines.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by timellis-smith on Wednesday August 24, 2022 @03:03AM (#32575804)
A good estate car will provide much the same room, while providing greater safety to pedestrians and better fuel economy / battery range.

There is little justification in the modern world for driving a SUV.

Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pif on Wednesday August 24, 2022 @08:39AM (#32578609)
There's a huge justification: comfort.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by llbeansandrice on Wednesday August 24, 2022 @12:27AM (#32574979)
I think a solid case can be made that almost all car driving is immoral. The solution isn’t individual like “buy a smaller car” is, but driving is objectively bad.
Re:Effects of large vehicles on pedestrian and pedal-cyclist... by pjc50 on Wednesday August 24, 2022 @05:08AM (#32576752)
> calculation is risk based, not morality

Unfortunately it can't be a bright line. Exposing people to "excessive" risk is wrong, that's the basis of things like drink-driving laws. And that ends up turning it into an arbitrary but important line: you break the law if you exceed a blood alcohol content, but the risk you impose on other people increases seamlessly as the BAC goes up.

Trucks over a certain weight require extra licensing. I wonder if this threshold should be brought down to reflect the extra harm of larger vehicles?