The thing that has been shown to drive down vehicle accidents has been: - Making drinking and driving unacceptable. - Better driver training. - Mandating veh

The thing that has been shown to drive down vehicle accidents has been: - Making drinking and driving unacceptable. - Better driver training. - Mandating vehicle safety checks (MOT in the UK). - Mandating speed limits with penalties. Vehicle aids actually allow people concentrate less on the road.