Which vehicles are not allowed to drive here?

This sign prohibits motorized bicycles from entering or driving on the road where it is placed. Motorized bicycles (often called mopeds) are lightweight two-wheeled vehicles with pedals and a small engine.

The rule is that this sign bans specifically motorized bicycles, not small motorcycles or light motorcycles. Small and light motorcycles, which generally have more powerful engines and a higher speed capability, are allowed here unless other signs forbid them.

So, if you see this sign, you know that only motorized bicycles are banned, helping to keep slower or less powerful vehicles off certain roads for safety and traffic flow reasons.