Speeds should be set using the 85th percentile rule: the speed limit is whatever speed the 85th percentile driver goes.
The thing, though, is we should work backwards from figuring out a desired speed for pedestrian + cyclist safety and then build a road with the desired 85th percentile speed.
Speeds should be set using the 85th percentile rule: the speed limit is whatever speed the 85th percentile driver goes.
The thing, though, is we should work backwards from figuring out a desired speed for pedestrian + cyclist safety and then build a road with the desired 85th percentile speed.
Too often, it’s done exactly backwards.