Dust, Darkness and a Broken-Down Container Truck on National Road 5
You are driving a 12-tonne rigid truck loaded with 8 tonnes of bagged cement southbound on National Road 5 at about 19:40. It is fully dark and there is no street lighting. A gravel truck 60 m ahead of you is throwing up thick dust that drifts across your lane, and your headlights barely reach past it. You are travelling at 60 km/h on a single carriageway about 7 m wide. Through the dust you make out a container truck stopped with its rear wheels still in your lane; four people are standing on the road beside it, waving their arms. A continuous line of oncoming vehicles with headlights on is about 150 m away and closing. Directly behind you, roughly 15 m back, a motorcycle is following with no tail light. The shoulder on your side is soft gravel about 1.5 m wide. Your tyres and brakes are in good condition and the surface under the dust is dry.
1. What should you do in the next five seconds, and why does each action matter?
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Ease off the accelerator and cover the brake, then brake progressively - not on the floor.
Reasoning:
- At 60 km/h you cover about 17 m every second. A stopped truck 60 m ahead in dust gives you roughly 3.5 seconds of thinking and reaction room, which is not enough to simply hold speed and hope.
- A hard emergency stop is the wrong first move because the unlit motorcycle is only 15 m behind you. He cannot see your brake lights clearly and has almost no gap; a violent stop puts him into your tailgate. Brake firmly but smoothly and early, so your brake lights give him warning and he has time to react.
- Sound the horn in a long burst and flash your headlights to move the four people off the carriageway. People waving in the dark are often trying to warn you, but they are also a hazard themselves.
Do not swing into the oncoming lane. The oncoming traffic is 150 m away and closing at a combined speed of around 120 km/h - roughly 4.5 seconds. In dust, you cannot confirm the lane is clear far enough to commit a loaded 20-tonne combination to it.
2. How does the motorcycle behind you change your braking plan and your choice of stopping position?
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A tailgating, unlit motorcycle changes two things: how hard you can brake, and where you leave the truck.
- Brake earlier and lighter rather than later and harder. Your total stopping distance is limited by his reaction, not yours. Start slowing at once so the speed difference between you builds gradually.
- Assume he will overtake you on the left into the oncoming lane once you slow. Before you change position, check your mirrors and give a clear, early right-hand signal so your intentions are obvious.
- Stop as far to the right as the gravel shoulder allows, keeping the truck straight, wheels straight ahead, so that if anything hits you from behind the truck is pushed forward rather than tipped. Leave the left side of the lane open for the oncoming traffic that may have to divert around the broken-down container truck.
- Switch on hazard lights as you slow, not after you stop. A stationary 12-tonne truck in dust and darkness is invisible until far too late without them.
3. If the lane is fully blocked and you must stop, describe how you secure the scene.
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Stopping is only half the task; the truck must not become a second crash site.
- Stop short of the blockage, leaving at least 20–30 m so you are not inside the dust cloud and not in line with the stalled truck's rear.
- Hazard lights on, engine off, parking brake on, wheels straight. Turn the steering so that if you are struck from behind the truck is pushed away from the people, not into them.
- Warning device well back. In darkness, dust and traffic moving at highway speed, a reflective triangle or cone needs to be placed far enough back for an approaching driver to react - at least 50 m, and further if the dust is thick. Carry it facing traffic, wearing something reflective.
- Keep everybody off the carriageway and out from between the vehicles. The gap between your front bumper and the stalled truck is a trap, not a safe place to stand.
- Call for help (police 117, ambulance 119 if anyone is injured) and stay with the vehicle until relieved.