Quote:
Originally posted by Mort-Hog
I imagine cars being more curvy might help, but not much. The development of plastic deformation ('crumple zones') aims to protect the driver, but that too might have some effect on the pedestrian.
I imagine that the mass of a vehicle has, if anything, increased over time, so they have more kinetic energy, so accidents are more likely to be fatal.
Technology doesn't really help here.
I imagine cars being more curvy might help, but not much. The development of plastic deformation ('crumple zones') aims to protect the driver, but that too might have some effect on the pedestrian.
I imagine that the mass of a vehicle has, if anything, increased over time, so they have more kinetic energy, so accidents are more likely to be fatal.
Technology doesn't really help here.
A lot of what you say is true, and I don't know Physics well. But you also forget lots of other advancement: air bags, for one. Brian suggests that speed should change with tech, and I think that means that if the injuries sustained in an accident between two modern cars at 45 mph are the same as that of two older cars colliding at 35 mph, then a 35mph speed limit made during the period of the older cars should be updated to 45 mph today.
Obviously faster speeds increase the danger of the accident, but the laws need to be based on the appropriate risk.