Most Commercial Driver's Instruction Permit (CDIP) applicants are in one of the following two categories of drivers:

1. The first category of applicants will have a current non-commercial driver's license from Connecticut. All of these applicants must obtain a Commercial Driver's Instruction Permit (CDIP) prior to behind-the-wheel training in a Commercial Motor Vehicle (CMV).
2. The second category of applicants will have a current Connecticut Commercial Driver's License (CDL). These applicants will be "changing" or "upgrading" their CDL by doing one or more of the following:

• Removing the air brake restriction
• Adding the Passenger Endorsement
• Going to a class "A" or "B" from a class "C"
• Going to a class "A" from a class "B"

Doing any one of the above requires the applicant to get a (CDIP). The CDIP is not required if a skills test is not required. This occurs when an operator who holds a current CDL is adding a Hazmat, Tank and/or Doubles/Triples Endorsement.

Please note the age requirements to obtain a CDL. 

Public Passenger Endorsement
Applicants interested in operating a vehicle carrying passengers for hire must also apply for and receive a public passenger endorsement.  Please see Public Service Endorsements for more detailed information.