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What happened?
A tractor and semitrailer was loaded with 45 m³ of gasoil.
It was going downhill on a winding road when the driver was unable to use the brakes and lost control.
The driver assistant died after jumping out of the vehicle when it was going at 80 km/h (50m/h).
The vehicle rolled over after colliding with another heavy vehicle on the road whilst travelling at 104km/h (65m/h).
The driver, who remained inside the cabin, broke his right wrist, and received cuts to his right eye and left arm.
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Why did it happen?
Onboard computer showed there was a breakdown on the pneumatic system feeding the braking circuit and the clutch of the vehicle.
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What did they learn?
Remind drivers to stop immediately if they notice any alarm notifications (abnormal pressure, breakdowns, pneumatic circuit of heavy vehicles).
Ensure drivers are competent to use all the braking systems available (parking, emergency and retarder brakes).
Drivers should confirm all regular maintenance is carried out and recorded for their vehicles:
- Regular draining operations for preventing internal and external corrosion on 4 circuit protection valve and air cylinders.
- Sufficient compressed air tanks for brakes and other pneumatic systems are fitted and secured.
- Carbon steel air cylinders have been hydraulically pressure tested. Check validity of tests (number of years).
- Visual inspection of pneumatic hoses and regular replacement of air dryer filter.
- Check the pneumatic circuit for the following: operational pressure, service brake valve, main air pipe, 4 circuit protection valve.
- Confirm the brake cylinders are spring type on at least 2 axles.
Report any similar known incidents for data comparison.
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Ask yourself or your crew
Have you ever been in a vehicle accident, or known anyone who has, due to failed brakes? What happened?
What checks do you do on your vehicle prior to use?
What maintenance records are kept for your vehicle?
If you had to use a different vehicle to normal, how familiar are you with the way it works? Where can you find the maintenance records?
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What happened?
A tractor and semitrailer was loaded with 45 m³ of gasoil.
It was going downhill on a winding road when the driver was unable to use the brakes and lost control.
The driver assistant died after jumping out of the vehicle when it was going at 80 km/h (50m/h).
The vehicle rolled over after colliding with another heavy vehicle on the road whilst travelling at 104km/h (65m/h).
The driver, who remained inside the cabin, broke his right wrist, and received cuts to his right eye and left arm.
Why did it happen?
Onboard computer showed there was a breakdown on the pneumatic system feeding the braking circuit and the clutch of the vehicle.
What did they learn?
Remind drivers to stop immediately if they notice any alarm notifications (abnormal pressure, breakdowns, pneumatic circuit of heavy vehicles).
Ensure drivers are competent to use all the braking systems available (parking, emergency and retarder brakes).
Drivers should confirm all regular maintenance is carried out and recorded for their vehicles:
- Regular draining operations for preventing internal and external corrosion on 4 circuit protection valve and air cylinders.
- Sufficient compressed air tanks for brakes and other pneumatic systems are fitted and secured.
- Carbon steel air cylinders have been hydraulically pressure tested. Check validity of tests (number of years).
- Visual inspection of pneumatic hoses and regular replacement of air dryer filter.
- Check the pneumatic circuit for the following: operational pressure, service brake valve, main air pipe, 4 circuit protection valve.
- Confirm the brake cylinders are spring type on at least 2 axles.
Report any similar known incidents for data comparison.
Ask yourself or your crew
Have you ever been in a vehicle accident, or known anyone who has, due to failed brakes? What happened?
What checks do you do on your vehicle prior to use?
What maintenance records are kept for your vehicle?
If you had to use a different vehicle to normal, how familiar are you with the way it works? Where can you find the maintenance records?
A tractor and semitrailer was loaded with gasoil. It was going downhill on a winding road when the driver was unable to use the brakes and lost control, crashing into another heavy vehicle on the road. The driver assistant lost his life.
