* note: "low" vehicles: under 7' 6" tall.
"high" vehicles: taller than 7' 6".

Class 1: low 2-Axle vehicles & motorcycles.

* note: all motorcycles, including those pulling trailers or with a sidecar, are considered class 1 vehicles.

Class 2: low 3-Axle and high 2-Axle vehicles.

Class 3: low 4-Axle and high 3-Axle vehicles.

Class 4: low 5-Axle and high 4-Axle vehicles.

Class 5: low 6-Axle and high 5-Axle vehicles.

Class 6: high 6-Axle vehicles.

Class 7: 7 axles or more.

class 1: 7,000 lbs or less

class 2: 7,001 - 15,000 lbs*

* note: class 2 vehicles also includes any vehicle with three or more axles, even if it weights less than 7,000 lbs. exclusions: motorcycles with a sidecar or trailer.

class 3: 15,001 - 19,000 lbs

class 4: 19,001 - 30,000 lbs

class 5: 30,001 - 45,000 lbs

class 6: 45,001 - 62,000 lbs

class 7: 62,001 - 80,000 lbs

class 8: 80,001 - 100,000 lbs

class 9: 100,001 lbs or more