| Aspect | Contractual Doubles Triples Driver | Contractual Singles Driver |
|---|
| Credentials | Commercial Driver's License (CDL), endorsements for doubles/triples | CDL, typically without endorsements for doubles/triples |
| Work Environment | Long-haul, highway, and specialized trailer handling | Local or regional deliveries, standard trailers |
| Employer & Industry Usage | Freight companies, logistics, transportation industry | Same as doubles/triples, often within same companies |
Contractual Doubles Triples Drivers operate vehicles with double or triple trailers, requiring specific endorsements and experience. Contractual Singles Drivers handle standard trailers without special endorsements. The main difference lies in trailer types, credentials, and work scope, with doubles/triples drivers often working on longer, more complex routes.