Employers should make sure that people working with vehicles are aware of dangers and safety precautions, and monitor vehicle use.
An obstruction in the cab or elsewhere is a very common cause of falls, and spilt loads can also be dangerous. Vehicles should be kept as clean and tidy as possible, and especially free from grease or oil on walking or other support surfaces, such as any platform area behind the cab.
People should never use parts of the vehicle not designed as hand or footholds (such as mudguards, bumpers, tracks, hooks) to gain access to any part of a vehicle. Parts of the vehicle not designed to support weight may give way, and their surfaces are likely to be unsuitable.
When getting down from the vehicle, people should use the steps or ladder provided. Workers should not jump down, as this can cause slips and falls, or can lead to injuries like sprained or broken ankles, or long-term knee complaints. The exception to this is workers jumping clear of vehicles where there is a risk of electric shock should they climb down.
People involved in working with or around vehicles should always wear appropriate footwear, which is in good condition and has good tread and ankle support. Where a risk assessment shows that people need to wear a certain type of footwear, that footwear is considered personal protective equipment and so needs to be provided and maintained free of charge to the worker.
In some workplaces it may be practical to fit a harness system to protect people working at height, such as a 'work-restraint' or an 'inertia-reel fall-arrest' system, where harnesses are worn linked to overhead rails.
If you provide 'fall-arrest' systems, think about using signs to show that they must be used. You must also supervise and monitor their use. You must consider maintenance and provide training to users.
If there is a possibility of a fall, by law you must plan for the rescue of anyone who has fallen.
There is more guidance on working safely at height in the HSE site work at height.