Prohibits the movement of all mechanical vehicles, except for two- wheeled motorcycles without a side attachment.
The traffic of all vehicles is prohibited, except for wheeled tractors.
Traffic of tractors and self-propelled vehicles is prohibited.✓Correct answer
Explanation
The red-bordered circular sign contains a tractor symbol, so its prohibition is directed at tractors and self-propelled machines. It does not ban all motor vehicles or make tractors the sole exception; those readings assign the symbol a much broader meaning than it has.
