I've frequently seen motorcyclists acting like they're suicidal (just not quite deliberately riding under the front of that lorry), drivers acting like they think they're invincible, cyclists acting like nobody else on the road is actually there so they don't need to bother trying to avoid being run over by them, and pedestrians who think the traffic will just magically avoid them when they run across the road in the dark while dressed all in black.

There are terrible people in control of all vehicles.