You are here: Home > Support > Software Support > Support Article
Support
S04008 - What do the classes stand for in a standard classification study?
Most classification studies are done use the Federal Highway Administration's
Scheme F as a basis. This scheme contains 13 separate classes of vehicles,
described below:
Class 1 - Motorcycles
This class includes all two- or three-wheeled motorized vehicles. These vehicles
typically have a saddle-type of seat and are steered by handlebars rather than a
steering wheel. This includes motorcycles, motor scooters, mopeds, motor-powered
bicycles and three-wheel motorcycles.
Class 2 - Passenger cars
This class includes all sedans, coupes and station wagons manufactured primarily
for the purpose of carrying passengers, including those pulling recreational or
other light trailers.
Class 3 - Pickups, Vans and other 2-axle, 4-tire single unit vehicles
This class includes all two-axle, four tire vehicles other than passenger cars, which
includes pickups, vans, campers, small motor homes, ambulances, minibuses and
carryalls. These types of vehicles which are pulling recreational or other light
trailers are included.
Class 4 - Buses
This class includes all vehicles manufactured as traditional passenger-carrying
buses with two axles and six tires or three or more axles. This includes only
traditional buses, including school and transit buses, functioning as
passenger-carrying vehicles. All two-axle, four tire minibuses should be classified
as Class 3. Modified buses should be considered to be trucks and classified
appropriately.
Class 5 - Two-Axle, Six-Tire Single Unit Trucks
This class includes all vehicles on a single frame which have two axles and dual
rear tires. This includes trucks, camping and recreation vehicles, motor homes, etc.
Class 6 - Three-Axle Single Unit Trucks
This class includes all vehicles on a single frame which have three axles. This
includes trucks, camping and recreation vehicles, motor homes, etc.
Class 7 - Four or More Axle Single Unit Trucks
This class includes all vehicles on a single frame with four or more axles.
Class 8 - Four or Less Axle Single Trailer Trucks
This class includes all vehicles with four or less axles consisting of two units, in
which the pulling unit is a tractor or single unit truck.
Class 9 - Five-Axle Single Trailer Trucks
This class includes all five-axle vehicles consisting of two units in which the pulling
unit is a tractor or single unit truck.
Class 10 - Six or More Axle Single Trailer Trucks
This class includes all vehicles with six or more axles consisting of two units in
which the pulling unit is a tractor or single unit truck.
Class 11 - Five or Less Axle Multi-Trailer Trucks
This class includes all vehicles with five or less axles consisting of three or more
units in which the pulling unit is a tractor or single unit truck.
Class 12 - Six-Axle Multi-Trailer Trucks
This class includes all six-axle vehicles consisting of three or more units in which
the pulling unit is a tractor or single unit truck.
Class 13 - Seven or More Axle Multi-Trailer Trucks
This class includes all vehicles with seven or more axles consisting of three or more
units in which the pulling unit is a tractor or single unit truck.
Most class studies also contain data for Class 14 - Unclassified Vehicles. This
class includes all vehicles which could not process into one of the existing 13
classes. This data can be retained in your reports, or it can be redistributed by the
software into the existing 13 classes based on the percentages in each of those
classes.
S04008 - What do the classes stand for in a standard classification study?
Most classification studies are done use the Federal Highway Administration's
Scheme F as a basis. This scheme contains 13 separate classes of vehicles,
described below:
Class 1 - Motorcycles
This class includes all two- or three-wheeled motorized vehicles. These vehicles
typically have a saddle-type of seat and are steered by handlebars rather than a
steering wheel. This includes motorcycles, motor scooters, mopeds, motor-powered
bicycles and three-wheel motorcycles.
Class 2 - Passenger cars
This class includes all sedans, coupes and station wagons manufactured primarily
for the purpose of carrying passengers, including those pulling recreational or
other light trailers.
Class 3 - Pickups, Vans and other 2-axle, 4-tire single unit vehicles
This class includes all two-axle, four tire vehicles other than passenger cars, which
includes pickups, vans, campers, small motor homes, ambulances, minibuses and
carryalls. These types of vehicles which are pulling recreational or other light
trailers are included.
Class 4 - Buses
This class includes all vehicles manufactured as traditional passenger-carrying
buses with two axles and six tires or three or more axles. This includes only
traditional buses, including school and transit buses, functioning as
passenger-carrying vehicles. All two-axle, four tire minibuses should be classified
as Class 3. Modified buses should be considered to be trucks and classified
appropriately.
Class 5 - Two-Axle, Six-Tire Single Unit Trucks
This class includes all vehicles on a single frame which have two axles and dual
rear tires. This includes trucks, camping and recreation vehicles, motor homes, etc.
Class 6 - Three-Axle Single Unit Trucks
This class includes all vehicles on a single frame which have three axles. This
includes trucks, camping and recreation vehicles, motor homes, etc.
Class 7 - Four or More Axle Single Unit Trucks
This class includes all vehicles on a single frame with four or more axles.
Class 8 - Four or Less Axle Single Trailer Trucks
This class includes all vehicles with four or less axles consisting of two units, in
which the pulling unit is a tractor or single unit truck.
Class 9 - Five-Axle Single Trailer Trucks
This class includes all five-axle vehicles consisting of two units in which the pulling
unit is a tractor or single unit truck.
Class 10 - Six or More Axle Single Trailer Trucks
This class includes all vehicles with six or more axles consisting of two units in
which the pulling unit is a tractor or single unit truck.
Class 11 - Five or Less Axle Multi-Trailer Trucks
This class includes all vehicles with five or less axles consisting of three or more
units in which the pulling unit is a tractor or single unit truck.
Class 12 - Six-Axle Multi-Trailer Trucks
This class includes all six-axle vehicles consisting of three or more units in which
the pulling unit is a tractor or single unit truck.
Class 13 - Seven or More Axle Multi-Trailer Trucks
This class includes all vehicles with seven or more axles consisting of three or more
units in which the pulling unit is a tractor or single unit truck.
Most class studies also contain data for Class 14 - Unclassified Vehicles. This
class includes all vehicles which could not process into one of the existing 13
classes. This data can be retained in your reports, or it can be redistributed by the
software into the existing 13 classes based on the percentages in each of those
classes.
