<Li> X Combination of Tank Vehicle and Hazardous Materials (Written Test) </Li> <Li> W Tow truck . (Written Test) </Li> <P> T, P, S, N, H and X are Federal endorsements . Any other endorsements have been promulgated at the State level . i.e. New York DMV requires a "W" endorsement to legally operate a tow truck in New York . </P> <P> Depending on your State, the education requirements vary . Some states (Ohio) for example requires 160 hours or classroom and on the road training . Training may be obtained by completing a qualified CDL training program through a truck driving school . These training programs specialize in teaching potential truck drivers the necessary skills and knowledge to properly and safely operate a truck, including map reading, trip planning, and compliance with U.S. Department of Transportation laws, as well as backing, turning, hooking a trailer, and road driving . The overall purpose of these training schools is to help truckers - to - be pass the CDL knowledge and skills tests as well as advanced driving techniques such as skid avoidance and recovery and other emergency actions for situations such as a break away trailer and hydroplaning . These classes usually go well beyond the training the typical non-commercial driver receives, such as the drivers education provided in high school . There are a number of licensed CDL training schools around the United States and many trucking companies operate their own schools as well . </P>

When do you need a commercial drivers license