For heavy and medium-duty trucks, as well as semi-trailers carrying goods, the height from the ground must not exceed 4 meters, and vehicles transporting containers must not exceed 4.2 meters. Below is relevant information about height restrictions for blue license plate vehicles: 1. Regulations: The load carried by motor vehicles must not exceed the approved load capacity specified in the vehicle's registration certificate. The loading length and width must not exceed the dimensions of the vehicle compartment, and the following regulations must be observed: 2. Specific regulations: For heavy and medium-duty trucks and semi-trailers carrying goods, the height from the ground must not exceed 4 meters, and vehicles transporting containers must not exceed 4.2 meters; for other motor vehicles carrying goods, the height from the ground must not exceed 2.5 meters; for motorcycles carrying goods, the height from the ground must not exceed 1.5 meters, and the length must not exceed the vehicle body by 0.2 meters. The width of goods carried by two-wheeled motorcycles must not exceed the handlebars by 0.15 meters on each side; the width of goods carried by three-wheeled motorcycles must not exceed the vehicle body. Passenger cars, except for external roof racks and built-in luggage compartments, must not carry goods. For passenger cars carrying goods on roof racks, the height from the roof must not exceed 0.5 meters, and the height from the ground must not exceed 4 meters.
