The length, width and height standards of semi-trailers vary depending on the type.
Length: The total length of an ordinary semi-trailer shall not exceed 16.5 meters, and the maximum length of the trailer part is 13 meters; the total length of a closed box semi-trailer is capped at 18.1 meters, and the trailer length can reach 14.6 meters. The common lengths of box semi-trailers are 11 meters, 12 meters, 13 meters and 14.6 meters; the lengths of warehouse semi-trailers range from 9.5 meters to 13 meters; the lengths of container semi-trailers range from 7.3 meters to 13.9 meters; the lengths of low-bed semi-trailers range from 9.5 meters to 16 meters.
Width: The standard width of a semi-trailer is 2.5 meters, but there are also specifications of 2.55 meters, 2.8 meters and 3 meters.
Height: The maximum height limit of an ordinary semi-trailer is 4 meters, while the maximum height of a closed box semi-trailer is 4.2 meters.
These size standards are designed to ensure road safety and transportation efficiency while meeting different transportation needs. In actual applications, manufacturers may adjust the size according to specific needs, but it must be within the legal range.
