Car model Type of automobile
Small-size vehicle, Motorcycle Light vehicle Light automobile 
Special small motor vehicle 
Two wheeled vehicles (including motorcycle with side car)
Standard-size vehicle Standard vehicle Compact car (excluding two wheeled vehicles and motorcycles with side cars) 
General passenger cars 
Coupled vehicle (Light vehicle towing a single-axle trailer)
Mid-size vehicle Mid-size car Trucks (a vehicle of 3 axles and below with a gross vehicle weight of under 8 tons and maximum loading capacity of under 5 tons or a 2 axle tractor semi-trailer not towing a vehicle). 
Microbus (with a riding capacity of 11 to 29 and a gross vehicle weight of under 8 tons) 
Coupled vehicles (Light vehicle towing a trailer (2 or more axles) or standard-size vehicle towing a single-axle trailer)
Large-size vehicle Oversized vehicle Trucks (Vehicles with 3 axles or less with a gross vehicle weight of 8 tons or more and a maximum load of 5 tons or more, vehicles with a total gross weight of under 25 tons, and 4-axle vehicles and 3-axle semi-trailer tractors not coupled to a towed trailer
However, trucks shall not exceed 20 tons if they have a maximum wheelbase distance of under 5.5 meters and vehicle length under 9 meters. Trucks shall not exceed 22 tons if they have a maximum wheelbase distance of 5.5m-7m and a vehicle length of 9 or more meters, or a maximum wheelbase distance of 7 meters or over with a vehicle length of 9-11m.
Buses (Regular route bus with a passenger capacity of 30 or more and a gross vehicle weight of 8 tons or more, or a vehicle with a gross vehicle weight of 8 tons or more and a passenger capacity of 29 or less with a vehicle length of under 9 meters) 
Coupled vehicles (Standard-size vehicle towing a trailer with 2 or more axles, mid-size vehicle towing a single-axle trailer, or large-size vehicle (2 axles) towing a single-axle trailer).
Over-size vehicle Extra large vehicle Trucks (4 or more axles, other than those classified as large-size vehicles Coupled vehicles--Mid-size vehicle towing a trailer with 2 or more axles, large-size vehicle towing a trailer with a total of 4 or more axles, or an over-size vehicle towing a trailer) 
Buses (Bus with a passenger capacity of 30 or more and a gross vehicle weight of 8 tons or more (except for regular route buses)) 

Toll booth workers may ask for information to determine the classification of the vehicle.