Anecdotally (I have no data or way to prove it) stop and go traffic seems about 20-30% slower to me than when I first started driving. It's only in the last few

Anecdotally (I have no data or way to prove it) stop and go traffic seems about 20-30% slower to me than when I first started driving. It's only in the last few years have I literally seen people just sitting through a green light, but now taking 10-15 seconds to start moving after the car in front of you has is IMHO far more common. Previously that was almost exclusive to dropping something on the floor, getting distracted talking to people in the back seat, adjusting the radio, or other things that were exceptions, not the rule. Now it's just failing to look up from the phone in their lap.