Generally speaking, the size and load standards of large-scale transport vehicles vary depending on the goods being transported, and are specifically divided into the following categories:
- Overwidth standard for large-scale transport vehicles
The width limit for large-scale transport goods on Class I roads is: greater than or equal to 3.5 meters and less than 4.5 meters;
The width limit for large-scale transport goods on Class II roads is: greater than or equal to 4.5 meters and less than 5.5 meters;
The width limit for large-scale transport goods on Class III roads is: greater than or equal to 5.5 meters and less than 6 meters;
The width limit for large-scale transport goods on Class IV roads is: greater than or equal to 6 meters or more.
- Overlength standard for large-scale transport vehicles
The length limit for large-scale transport goods on Class I roads is: greater than or equal to 14 meters and less than 20 meters;
The length limit for large-scale transport goods on Class II roads is: greater than or equal to 20 meters and less than 30 meters;
The length limit for large-scale transport goods on Class III roads is: greater than or equal to 30 meters and less than 40 meters;
The length limit for large-scale transport goods on Class IV roads is: greater than or equal to 40 meters or more.
- Extra-height standard for large-piece transport vehicles
The height limit for large-piece transport on Class I roads is: greater than or equal to 3 meters and less than 3.8 meters;
The height limit for large-piece transport on Class II roads is: greater than or equal to 3.8 meters and less than 4.4 meters;
The height limit for large-piece transport on Class III roads is: greater than or equal to 4.4 meters and less than 5 meters;
The height limit for large-piece transport on Class IV roads is: greater than or equal to 5 meters or more.
- Load standard for large-piece transport vehicles
The weight limit for large-piece transport on Class I roads is: greater than or equal to 20t and less than 100t;
The weight limit for large-piece transport on Class II roads is: greater than or equal to 100t and less than 200t;
The weight limit for large-piece transport on Class III roads is: greater than or equal to 200t and less than 300t;
The weight limit for large-piece transport on Class IV roads is: greater than or equal to 300t or more.
