Summary of Law(s) and Regulation(s):

Drivers of motor vehicles in excess of 10,000 pounds, mechanics of those vehicles or other commercial vehicles, and forklift operators may be required to submit to testing in accordance with Federal DOT regulations, even if testing is not mandated by Federal regulation.

Drug and alcohol testing of drivers of certain vehicles, mechanics and forklift operators
Conn. Gen. Stat. Sec. 14-261b

Regulations re school bus operators and operators of student transportation vehicles; qualifications; training. Preemployment drug test required for operators
Conn. Gen. Stat. Sec. 14-276a