This standard specifies the shape, size, position, visible range and strength requirements of the number plate (frame) of agricultural transport vehicles. This standard applies to agricultural transport vehicles.
GB/T 19131-2003 history
2015GB/T 19131-2015 Tri-wheel vehicles and low-speed goods vehicles.License plates (crackets) and it's position
2003GB/T 19131-2003 Agricultural vehicles--License plates(crackets) and it's position