I sometimes do sort-of-the-opposite which is, if I spot someone trying to join the road, and there's plenty of room ahead and behind me, I'll speed up ever-so-s

I sometimes do sort-of-the-opposite which is, if I spot someone trying to join the road, and there's plenty of room ahead and behind me, I'll speed up ever-so-slightly to give them more chance of getting on. It's not often, and it's nuanced, but I like to think it's an efficiency positive!