Given that road wear grows to the fourth power (!) with vehicle weight, I hope you guys feel well with the fact that your tax dollar subsidizes those ultra heavy trucks.
Retail stores certainly existed before the automobile. People walked, biked or used horses to get to them. Horse and cart were used to deliver things to them.
But this isn't really the right debate. Sure you need some last mile in many cases, but that's also often true with large trucks.
The simple fact is a far, far, far larger amount of transport could be handled by train if society put the right insensitive in place, rather then the completely backwards intensives that exist now.
In Switzerland its quite common for example to have even fresh food transported by train, the largest retailer works closely with the rail company and delivers to a number of regional depots where smaller (sometimes small or medium) trucks then take it to individual stores. We don't have these Wallmarkt supper stores that Americans (unfortunately for them prefer).
Its very common that larger stores, like Ikea actually are directly connected by the train network.
There could actually also be a lot more done to do cargo delivery by tram. This has started in a number of European cities. In Zürich the Cargo tram is currently mostly used for extraction of waste (like e-waste), not yet delivery, but it has potential.
Why haven't you told me earlier? I wouldn't have had to bother to walk to the supermarket across the street.
By contrast on American interstates the standard is 80,000lbs.
Your sarcasm is unwarranted and just makes you look stupid when you are completely wrong.
Divided by tire. That's why heavy trucks have so many of them.
Most countries regulate the weight by tire, so that this actually doesn't change between trucks.
On practice the impact of the truck is determined by law independently of the weight (on those superficial models, but there is also some depth where the regulation starts to fail).
Where can we find more on this? I'm not doubting, but I can't think of why this is. It's pretty rare to find much in the physical world that uses the 4th power (Hagen–Poiseuille equation relating fluid pressure differential in a pipe - or artery - is one of the few that comes to mind)
Weight savings are nice of course. But so is not burning diesel by the hundreds of gallons. The trade off is between a few percent extra weight or lots of dollars spent on fuel.
From my understanding of the trucking industry, in many sectors, this isn't true at all. For example, in tipper trucks where you are carrying literal dirt and rocks from one place to another every kg counts and tare weight of the truck is very much a consideration, even in the relatively minor variations between diesel trucks.
In the US weight restrictions are even lower than in Europe in many states.