I sit above a pretty busy intersection and get to witness the madness and regular accidents of rush hour traffic heading out of downtown on a daily basis.<p>I think simply shimming an extra second or of intersection clearing time between transitions would go long way towards addressing the apparent dangers of light timing.<p>Activating traffic signals and pedestrian signals simultaneously results in drivers who try to 'beat' the pedestrians off the curb.<p>Activating perpendicular traffic signals too close traffic/pedestrian signals puts the cross-traffic in danger of being hit by the people trying to time the light.<p>Add a second or two, end up with <5 fewer light transitions per hour.<p>Though, on a related note, what I see cause more accidents and general bullshit than timing lights is the ridiculous amount of cellphone use that happens in motion and particularly at intersections.<p>Every day I see someone stop at the red light below me and immediately start fiddling with their phone, as the light turns green and the fiddler proceeds to hit the gas <i>irrespective</i> of what is happening in the road directly in front of them - pedestrians, gridlock, presidential motorcade only to run into something or panic stop seconds later if they're lucky.<p>At first this seemed inexplicable..."Can't these people see?"<p>Upon thinking about it, I'm guessing they actually can't or more accurately don't see. That the fraction of a second they have to hit the gas before getting a chorus of horns or a rear-ending is simply too short to take in even major changes in the scene in front of them.<p>Self-driving cars can't come soon enough.