(Having said that, there's not much doubt in my mind that stuff like antilock brakes and autonomous emergency braking have reduced the road toll (and will reduce it further as these recent-ish technology become more common i the aged vehicle fleet) - I think the difference there is then those technologies are not nearly so inclined to make driver pay less attention to what's going on around them. I _hope_ people don't think "It's OK, I've got emergency braking - I'll just watch this tv show as I drive to work!")