Originally Posted by UniChris

It's not out of the question.

Say you have a cyclist (or worse a group) and two cars come up quickly behind. First car is driven by a cyclist who properly slows waiting until they have the sight line and opposing traffic clearance to pull halfway into the incoming lane.

Impatient jerk behind sees plate and realizes the car in front is driven by "another one of THEM" and does something rash like gun it around both car and cyclists at a blind curve, or be pointlessly aggressive when the lead car does find a good opportunity.

Years ago I'd commute past an absurd 15 mph school speed limit sign. I say absurd because around 25 was about the slowest you could go with following traffic, or they'd blast around you at 40 in frustration, drastically outweighing the difference between 15 and 25.