First was my first day with glasses - I didn't anticipate that my depth perception would be so different so the sensor beeped when traffic in front of me stoppe

First was my first day with glasses - I didn't anticipate that my depth perception would be so different so the sensor beeped when traffic in front of me stopped due to a changing light. Second was the car in front of me hitting the brakes when I was looking in the rearview mirror because both of us wanted to overtake the truck in front of us - that other person in the last moment decided not to do it. Or perhaps they weren't planning on that and just didn't see the truck - I didn't see them indicate.