Anecdata: Just a few days ago I was entering a road after checking really carefully for absence of traffic (I had a heavy trailer attached and knew I needed som

Anecdata: Just a few days ago I was entering a road after checking really carefully for absence of traffic (I had a heavy trailer attached and knew I needed some more time). Visibility on the left was excellent, but on the right not so much, so I waited for the right side to clear... look left, also clear, great... quickly check right again, still all clear. I was surprised by the car coming from the right honking at me after I entered the lane, because I was 100% sure that it wasn't there before and could not have been "hiding" behind the A-pillar. Maybe they were too fast, but now I think it's realistically possible that my perception tricked me because the glance to the right was too quick. Will definitely adjust the timing for that.