You absolutely can judge your own behavior when you are impaired, I have done that plenty of times and decided that I needed a break when driving plenty of times.
The issue is that you are a worse judge of your own behavior when impaired, so you need to take that into account
Blue_Morpho@lemmy.world 4 days ago
By the time you realized it you were already impaired. That’s why professional drivers have a schedule. It’s not up to them to decide for themselves that they could go longer.