![Commercial vehicles are rated by weight.]( https://img-aws.ehowcdn.com/360x200p/cpi.studiod.com/www_ehow_com/i.ehow.com/images/a07/5n/v0/weight-requirements-cdl-1.1-800x800.jpg 360w)
The Federal Motor Carrier Safety Administration (FMCSA) requires commercial drivers to pass knowledge and skills tests specific to the type of vehicle they will be driving. Vehicle weight is the main factor in deciding if a driver should have a Class A, B or C license. Commercial drivers who operate intrastate, interstate or foreign commerce must hold a commercial driver's license.
Class A
![Tractors and heavy trailers can meet Class A standards.](https://img-aws.ehowcdn.com/877x500p/cpi.studiod.com/www_ehow_com/i.ehow.com/images/a07/5n/v0/weight-requirements-cdl-2.1-800x800.jpg 877w)
Any driver who operates a combination of tractor and trailer that has a gross weight of 26,001 lbs. or more, or pulls a trailer or trailers that have a gross vehicle weight rating of more than 10,000 lbs., must have a Class A license.
Class B
![Trucks pulling lighter trailers may qualify as Class B.](https://img-aws.ehowcdn.com/877x500p/cpi.studiod.com/www_ehow_com/i.ehow.com/images/a07/5n/v0/weight-requirements-cdl-3.1-800x800.jpg 877w)
Driving a vehicle that has a gross vehicle weight rating of 26,001 lbs. or more requires a Class B license. When such a vehicle is towing a trailer, the trailer's gross weight must not exceed 10,000 lbs.
Class C
![Large passenger vehicles are usually considered Class C.](https://img-aws.ehowcdn.com/877x500p/cpi.studiod.com/www_ehow_com/i.ehow.com/images/a07/5n/v0/weight-requirements-cdl-4.1-800x800.jpg 877w)
If a vehicle is capable of transporting the driver and 15 or more people but is not defined as Class A or Class B, the driver must hold a Class C license. Also designated as Class C are vehicles transporting federally qualified hazardous or poisonous materials or select agents.
References
- Federal Motor Carrier Safety Administration: Commercial Driver's License Program (CDL/CDLIS)
- Federal Motor Carrier Safety Administration: CMV's are categorized as follows:
- Justia.com Laws & Regulations: Title 49 -Transportation
- Justia.com Laws & Regulations: 42 CFR & 73.3 HHS select agents and toxins
- Justia.com Laws & Regulations: 172.101 Purpose and use of hazardous materials table
- Pipeline and Hazardous Materials Safety Administration: Federal Hazardous Materials Transportation Law: An Overview
Writer Bio
Timber Ferguson began writing poetry and short stories in 1972. Her poetry has been published in the "Winchester News-Gazette" and "Muncie Star Press." She has also published a book of poetry and now writes for eHow. Ferguson holds an Associate of Arts in journalism from Ball State University.