Re:Regulation, not technology is holding back driverless cars
by ars on Sunday May 29, 2011 @07:25PM
(#2597906)
Automatic transmissions avoid engine braking. If you want it, you need to choose it manually.
And personally I never do for the simple reason that brakes are a lot cheaper than transmissions. And I rarely descend a hill long enough and steep enough that brake heating is a serious problem. (And when I do I usually just slow down, and stay slow.)
Re:Regulation, not technology is holding back driverless cars
by stretchwithme on Sunday May 29, 2011 @07:52PM
(#2597951)
I downshift on hills because that keeps more of my stopping power ready to use. Brakes heat up when you use them continuously, reducing their effectiveness.
Re:Regulation, not technology is holding back driverless cars
by danssig on Monday May 30, 2011 @08:11AM
(#2599137)
>Clearly that's not universally true, otherwise racing drivers would use automatic gearboxes.
F1 drivers did until it got banned. In fact, if I'm not mistaken I believe our more advanced automatic transmissions came from F1.
Frankly, I'm a little dubious of automatic transmission. Perhaps I've just been driving the wrong cars, but I haven't found an automatic gearbox that can match a human being. For instance, if I'm descending a steep hill, I'll stick the car in a lower gear, but an automatic always chooses the higher gear.