State context
CDL requirements in District of Columbia
The CDL knowledge tests are federal. What District of Columbia changes is the process around them — where you apply, what it costs, how the skills test is scheduled, and whether longer combination vehicles are permitted at all.
Take a 10-question federal diagnosticLonger combination vehicles in District of Columbia
District of Columbia does not permit LCV operation. Every other jurisdiction prohibits LCVs. The 1991 ISTEA freeze bars any state from adding routes or raising LCV weights, so a driver in a non-listed state cannot obtain LCV authority there at all — tell them that rather than sell them a practice test.
Source: cfr-658-appendix-c · reviewed 2026-07-30
Fees and scheduling
These vary by state and we do not publish a figure we have not read from District of Columbia's own licensing agency. Check the agency directly before you budget or book.