What is correct from this traffic sign onwards?

This traffic sign indicates a general prohibition of entry for all vehicles, often meaning "No vehicles allowed." For motorized bicycles, this means you are not allowed to drive through this area with the engine running. However, you may push your motorized bicycle by hand through the area. This is why pushing the motorized bicycle (option 1) is allowed, while riding it (even slowly or with the engine off) is not permitted. The key rule is that vehicles are prohibited, but manually pushing them is allowed. This helps control traffic and maintain pedestrian or restricted zones.