I don't lean left when looking back, but I just can't look back confidently because I lose track of what's happening in front of us. My first and only accident occured because I was so anxious to check the blindspot I didn't see the traffic stopping and I rear-ended someone. Blindspotless mirrors are a no brainer (they should be mandatory tbh). There are even inner car blindspot checking mirror, so you avoid the confusing view of two mirrors with different field of view close to each other. Either this or a proximity sensor with a large red light so I can sense I should break no matter where I look, military style.
Highway traffic jam. Long period of slow (3mph) drive, then full stop. I was near an exit so I decided to branch of on the right lane that was free of cars, thus still fast (50mph) to take the ramp. Our lane started to move again very slowly, I took the chance to switch lane, but was anxious about the high speed cars, so I checked, double checked, without realizing my lane stopped again while I was taking up speed (hoping not to cause people to slow too much in emergency) and switching lane.
Hit the right light of the car in front with my left one. Now causing real slow down and even more traffic jam.
