- Even heavy loads shift.
- Vehicles can roll over, in serious cases of load shift the vehicle can become unstable and overturn.
- HGVs are vulnerable to rollover because they have a higher centre of gravity than a car.
- Loads often shift under braking or turning, because the forces exerted can be surprisingly high even at low speed.
- Curtains and box sided vehicles may stop the load falling out during transport but without the proper restraint the load can move inside the trailer.