[clairity]

the point is that there's no reason to target speeding specifically. you want to target distractedness, recklessness, and impairment to reduce accidents, thereby obviating the problem with speed exacerbating injury and death.

i'm all for narrowing lanes and adding trees to streets as traffic calming measures in urban neighborhoods, but that's because it increases attentiveness, rather than reduces speed per se. speed governors, on the other hand, are bad because they could prevent a driver from speeding up to evade a collision.