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Front Brake Lights Could Drastically Diminish Road Accident Rates
(bioengineer.org)
This is a most excellent place for technology news and articles.
You're right about turn signals.
A lot of people have "target fixation" and telegraph their moves somewhat. I look at where the car is tracking in the lane and what their head is doing (if I can see it). Most people drift left or right on the highway before they change lanes, exit, or turn. It's no excuse for bad manners, but it helps.
Oh yea. I'll watch the wheels, their head, and if I can see them reposition their hands, I'll look for that.
I don't trust anyone when I'm on the road.
And you shouldn't. Everyone is equipped with a lethal weapon masquerading as personal transportation, where safety is predicated on mutually-assured-destruction and the presumption that everyone is a sane actor. Keep your head on a swivel and stay safe out there!
Some people don't care about their cars at all. They will damage their own just to spite another driver.
I've driven big 30ft box trucks that are governed at 60mph and daily a 2 seater sports car. There is nothing worth fucking up my day just to win an argument on who gets to go first.