Fatigue and a deadline on a long return trip
You have driven 5 hours from Bulawayo to Harare, arriving at 14:00, and must be back in Bulawayo the same night for work. You slept 4 hours the previous night. You have had two strong coffees and no proper meal. By 19:00 you are yawning repeatedly, your eyes feel heavy, and you have twice drifted toward the centre line before correcting. You have 300 km still to go. A friend on the phone says 'just push through, you're nearly there'.
1. Assess your fitness to continue and identify the warning signs.
Read the worked answer
You are not fit to continue driving. Warning signs present:
- Micro-sleeps / lane drift - twice drifting toward the centre line is a serious, late-stage warning; the brain is already nodding off.
- Repeated yawning and heavy eyes - classic fatigue indicators.
- Sleep debt (4 hours the night before) plus 5 hours' driving already.
- Caffeine and no meal - a temporary lift that masks, but does not cure, fatigue.
Fatigue impairs reaction time and judgement in ways the driver cannot self-assess. 'Nearly there' is irrelevant: 300 km at night while micro-sleeping is a high-probability collision.
2. What should you actually do tonight, and why is 'push through' wrong?
Read the worked answer
Stop and rest properly. Options:
- Pull into a safe, lit stopping place (service station, town) and sleep - a 20-minute nap restores alertness briefly; a proper sleep is the real fix.
- If you must be in Bulawayo, consider an overnight stop and travel at first light, or arrange alternative transport.
- Eat a proper meal and hydrate.
'Push through' is wrong because willpower does not reverse sleep debt. Caffeine and cold air buy minutes, not hours, and the drift toward the centre line shows control is already failing. The only reliable remedy for fatigue is sleep.
3. If you do stop at a lay-by, what safety steps apply before and during the rest?
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- Choose a safe, well-lit, populated stopping place, not a dark isolated shoulder; lock the doors.
- Park fully off the carriageway, switch on hazard lights while manoeuvring, and do not leave the car in a live lane.
- Set an alarm for a defined rest period; do not 'just close your eyes' indefinitely in an unsafe spot.
- Before resuming, check you feel genuinely alert; if not, extend the rest or arrange other transport.
- Tell someone your revised plan.
The judgement tested: recognising that the safe decision is to not drive, and that stopping must itself be done safely.