The CDL General Test consists of one or more endorsement tests and a test on air brakes. The test(s) you will be required to take will be determined by the specific license classification you wish to obtain (Class A, B, or C) as well as the type of vehicle you will be operating.
For certain vehicles which transport specific types of liquids or gases, a Tanker Vehicle Endorsement is required. The liquid or gas being transported does not necessarily have to be classified as hazardous; a tanker endorsement is required only if the vehicle requires a Class A or B CDL and you will be hauling the liquid or gas in a permanently mounted cargo tank which is rated at 119 gallons or greater, or a portable tank rated at 1,000 gallons or greater.
A School Bus Endorsement is required for any driver who operates a school bus containing passengers. The exception is mechanics who may need to drive an empty bus in the course of servicing the vehicle. The School Bus Endorsement is required only for those who will be operating the bus with passengers aboard.
Hazardous Materials Test – CDL Hazardous Materials Practice Test, Before being able to operate ANY vehicle that is used to transport any material which requires a Hazardous Material placard or any quantity of a material which is listed as a Select Agent or Toxin in 42 CFR 93, you must possess a CDL with a Hazardous Materials Endorsement. This testing (Hazardous Materials Endorsement) ensures that a driver is fully trained and qualified to deal with potentially dangerous spills and situations. This protects the driver, the company the driver works for, and the public, in general, should a potentially dangerous situation arise.
Class A CDL Pre-Trip Inspection Tractor Trailer. The purpose of this inspection is to make sure the commercial vehicle is safe to operate. The Pre Trip Inspection Test is one of the more difficult parts of the CDL exam due to the amount of memorization involved and the extreme importance of knowing each and every part and each safety point implicitly. However, it is absolutely necessary in order to ensure the safety of the driver and the other passengers on the road.