Charcoal Pickup with Passengers in the Load Bed
A farmer's single-cab pickup is being used to move charcoal from a village to a market 35 km away. The pickup has a payload rating of 1,000 kg. Workers load 16 bags of charcoal, each marked 50 kg, onto the load bed. Four passengers then climb into the load bed and sit on the bags because the cab is full. The rear leaf springs are almost flat, the tailgate is held by a rope, and the rear number plate and lamps are covered by charcoal dust. The driver plans to leave at 06:00 on a gravel road for 8 km before joining the tarmac. The front tyres are at 30 psi and the rear tyres at 45 psi; the placard says 35 psi front and 50 psi rear for a full load. The driver says the passengers are 'just going to the next stage' 12 km away.
1. Identify the legal and safety problems with this load and the passengers.
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The pickup is overloaded. Sixteen bags at 50 kg are 800 kg, which is within the 1,000 kg payload, but four adult passengers add roughly 280–320 kg, taking the total to about 1,080–1,120 kg plus the driver. Four passengers in the load bed are unrestrained and are exposed to ejection, crush, and exhaust fumes; carrying passengers in a goods compartment is unsafe and not a legitimate passenger service.
The tailgate held by rope can open under load. The load is not secured against forward or sideways movement. The rear lamps and number plate are obscured, which is a lighting and identification defect. The tyre pressures are below the placard for a full load: 30 psi front versus 35 psi, and 45 psi rear versus 50 psi. Underinflation increases heat, sidewall flex, and stopping distance. The 'just 12 km' argument does not reduce the risk.
2. Explain how the weight distribution and tyre pressures affect handling on the gravel and tarmac.
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The load bed is carrying about 1.1 tonnes, close to or above the rated payload once passengers are included. That compresses the rear leaf springs, reduces suspension travel, and raises the risk of the tailgate and load shifting. On gravel, a light front end reduces steering grip; the driver may feel vague steering and longer stopping. On tarmac, underinflated rear tyres run hotter and can fail, especially at highway speed.
The 5 psi deficit at the rear is significant for a loaded tyre: it increases sidewall deflection and rolling resistance. The front tyres at 30 psi instead of 35 psi reduce steering response and increase the chance of a front blowout. The correct pressures are the placard values for the actual load, checked cold. The load should be distributed evenly and secured with straps, and the rear lamps and plate must be visible.
3. What should the driver do before moving, and what should happen to the passengers?
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The driver should refuse to move with passengers in the load bed. The four passengers must travel in the cab only if there are legal seats and belts, or use another vehicle. The driver should redistribute the bags evenly, secure them with rated straps to the load bed anchor points, close and latch the tailgate properly, clean the number plate and lamps, and inflate the tyres to the placard pressures when cold.
If the total weight exceeds the payload rating, some bags must be left behind or a second vehicle used. The driver should record the check and inform the operator or farmer. The 06:00 start should be delayed until these steps are complete. On the gravel section, speed should be low and braking early. The 'next stage' distance is irrelevant because the risk begins at the first metre.