Which vehicles are you allowed to overtake where you see this traffic sign?

This traffic sign means "No overtaking." Specifically, it prohibits vehicles from overtaking other vehicles in general. However, an important exception is made for motorcycles without a sidecar. They are allowed to overtake because they are smaller, more maneuverable, and can generally do so safely in this situation. Motorcycles with sidecars and cars must not overtake when this sign is displayed.

Remember that this rule aims to prevent dangerous overtaking maneuvers in areas where visibility or road conditions are risky. So, when you see this sign, only overtake motorcycles without sidecars if it is safe and lawful to do so.