What is the length, width and height of the tractor head?

What is the length, width and height of the tractor head? What is the length, width and height of the tractor head? The maximum standard is length 13000mm or width13m or 2.5m.. Overall dimensions of trailer stipulated by the state: single-axle semi-trailer: 8600 mm long, 2500 mm wide and 4000mm； high; Two-axle semi-trailer: length 10000mm, width 2500mm and height 4000mm; three-axle semi-trailer: length 13000mm, width 2500mm and height 4000mm; central axle trailer (residential trailer): length 8000mm, width 2500mm and height 4000mm. Matching scheme of tractor and semi-trailer: in terms of height, the height of semi-trailer should be determined by considering the height of front traction seat. Generally, the head heights of several tractor manufacturers in China are not uniform, ranging from 1.35 meters to 1.42 meters. The dimensions of traction pins are divided into 90 pins and 50 pins. Because there are still many heavy goods in China, most of which are 90 needles. @20 19