system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do people on bikes have to ride on the side of the road and not on the sidewalk?
gpt
Bike traffic is too fast for sidewalks and given that a bicycle can be peddled 20-30 mph a sidewalk would not work. What works is actual bike lanes and drivers who watch were they're going as well as bicyclists that obey the rules.