Fatigue Management and Work/Rest Requirements
The fatigue framework
Heavy vehicle drivers must manage fatigue under work and rest rules. The core idea is that a driver cannot work more than the allowed maximum work time without taking the required minimum rest. Standard fatigue rules set limits on work time in a 24-hour period and require minimum continuous rest. Drivers record work and rest in a work diary, and must carry it and produce it on request. Breaks must be real rest, not paperwork or loading.
Concepts to understand
Know the difference between work time and rest time. Work includes driving and other duties such as loading. Rest must be continuous and free of work. Fatigue is a hazard like speed or alcohol: it slows reaction time and judgement. Plan trips so rest is taken before fatigue builds, not after. If you feel drowsy, stop and rest; a short nap and caffeine are only temporary measures.
Traps and rule of thumb
Questions often test whether a particular break counts as rest, or whether a driver can split rest. Another trap is assuming a work diary is optional for short trips. Rule of thumb: if you are unsure whether an activity is work, treat it as work and record it. Worked example: a driver who has used the maximum work time must take the required minimum continuous rest before starting again, and must record both in the diary.