Fatigue is not confined to rural highway journeys. A learner arriving after a long shift or an instructor finishing many hours of teaching may struggle to concentrate even on familiar suburban roads. The challenge is that tired drivers can become poor judges of their own alertness.
Understand risk without inventing a fixed threshold
South Australia’s Driver’s Handbook identifies lack of quality sleep, time of day, time on task and sleep disorders as contributors to driver fatigue. It describes a greater tendency for tiredness during late-night and afternoon periods and warns that coffee, an open window or loud music are not substitutes for sleep. The handbook recommends quality sleep, regular breaks and limiting prolonged driving periods. These are safety recommendations rather than a universal legal ‘two-hour driving limit’ for an ordinary car learner.
For commercial heavy-vehicle operations, separate fatigue-management duties may apply. A car-driving instructor should not apply a blanket heavy-vehicle work/rest rule to all private car drivers without checking the relevant regulatory framework.
Spot changes during a lesson
Useful observations include repeated missed signs, slowed responses to straightforward instructions, variable speed, reduced scanning and difficulty recalling a recent decision. Any one mistake may have another cause, but a cluster of changes should prompt the instructor to check whether continuing is safe.
Before a session, ask simple non-judgemental questions about how rested the learner feels, particularly for late-evening lessons or training after work. Plan routes and lesson intensity to match demonstrated ability. If fatigue affects control or situational awareness, stop safely, reassess and arrange rest or an alternative way home rather than press on to complete a scheduled syllabus.
A short coaching discussion
Invite the learner to identify fatigue signs they can recognise in themselves. Discuss what they would do if they noticed those signs on a long trip. Suitable answers include leaving the road at a safe location, resting, changing drivers when appropriate and avoiding a schedule that demands unsafe continuation.
Training success is not measured by how long a learner can ‘push through’. It is the ability to recognise impairment, make a safe decision and prevent a foreseeable risk.
Official references and further learning
Explore DAA defensive driving.
Instructor education only. Refer to current South Australian legislation and official guidance before using this information in formal training or assessment.