Technical Standards and Aspects of Operation
Technical Standards and Aspects of Operation
This domain tests roadworthiness, vehicle weights and dimensions, maintenance systems and load security. The examiner wants practical control, not just knowledge of annual test rules.
Core rules
- Vehicles must be maintained in a fit condition between inspections. A written maintenance system should set inspection intervals, defect reporting, rectification and record retention.
- Drivers should carry out walk-around checks before first use and report defects. Safety-critical defects mean the vehicle must not be used until rectified.
- Plated weights, axle weights and gross train weight must not be exceeded. Overloading can be by gross weight, axle weight or poor load distribution.
- Goods vehicle tyre tread must be at least 1 mm across three-quarters of the breadth and around the whole circumference; cuts and bulges may make a tyre unfit.
- Loads must be secured to withstand normal braking and steering forces; restraints must be suitable and checked.
Worked example
A 26-tonne rigid is booked to carry dense pallets. The gross weight is within the plated limit, but the rear axle is over its plated axle weight. The vehicle is still overloaded and illegal. The planner must redistribute or reduce the load, not simply check the total on a weighbridge ticket. If a tyre has 0.8 mm tread on the inner shoulder, it fails the tread requirement even if the centre looks legal.
Traps
Do not treat a current annual test certificate as proof of daily roadworthiness. Do not check only gross weight and ignore axle limits. Do not accept “the load has not moved yet” as evidence of securement. Do not confuse a maintenance inspection with an MOT test; both have a role, but they are not the same.