Each year, commercial truck accidents kill over 5,000 peoplE

The Federal Government regulates the amount of hours a truck driver can drive and be on duty for safety concerns.
See the "Federal Motor Carrier Safety Administration" guidelines for more information on Hours of Service regulations.
Many truck drivers have experienced "microsleep." This is when your eyes are open and your hands are on the wheel but your brain simply shuts off.
Truck driver fatigue is a contributing factor in 20% - 40% of heavy truck crashes, (National Transportation Safety Board).

According to the National Sleep Foundation, a 20-30min nap is found to be most effective.
A 20-30min nap can improve alertness and reduce fatigue.
A nap also increases performance including: quicker reaction time, better memory, less confusion, and fewer accidents and mistakes. (Mayo Clinic).
Taking a nap during an a long shift on the road will significantly reduce the dangers and risks of a fatigue/sleep-deprived related accident