Route Planning, Fatigue, and Hours of Service
What you must know
Hours-of-service rules limit driving time and require rest. Know the concepts: the driving limit within a shift, the on-duty limit, the required off-duty period, and the break requirement. Know that the rules exist to prevent fatigue and that falsifying logs is a serious violation. Route planning covers choosing legal routes, checking height and weight restrictions, planning fuel and rest stops, and accounting for traffic and weather.
Fatigue management is a system: sleep before the shift, take breaks, recognize warning signs such as lane drift and heavy eyelids, and stop when fatigued. Caffeine and cold air are temporary and do not substitute for rest.
Traps to expect
Questions test whether you know the difference between driving time and on-duty time, and whether you know that a break resets the driving clock but not the total shift. They reward planning rest stops in advance and penalize the driver who pushes through fatigue to meet a schedule. Route questions reward checking bridge heights and weight limits before departure.
Worked example: You are close to your driving limit but still far from the destination. The correct choice is to stop and rest, then continue after the required off-duty period, not to exceed the limit to finish the route.
Rule of thumb: plan the route around the rest stops, not the rest stops around the route.