lasthastighed

Lasthastighed, commonly used in Danish logistics and transport, refers to the maximum safe operating speed of a vehicle when it is carrying a specific load. It reflects the dynamic effects of the load on vehicle handling, including stability, braking, and steering, and is therefore not a fixed figure but depends on factors such as vehicle type, load characteristics, and road conditions.

The concept is used in route planning, safety assessments, and vehicle design. For road transport, lasthastighed helps determine permissible speeds under different loading scenarios, while in rail and maritime contexts it informs stability and ballast distribution considerations. In practice, operators balance lasthastighed with legal speed limits, control systems, and driver training to maintain safe operation.

Several factors influence lasthastighed: center of gravity and its height, load distribution across axles, the way the load is secured, total mass, braking system performance, tire grip, suspension, aerodynamics, weather, and road surface. Higher or uneven loads typically reduce the safe speed due to increased rollover risk, longer braking distances, and poorer handling.

Determination and management typically rely on manufacturer specifications, testing and simulation, and internal safety guidelines. Vehicles may be equipped with speed governors or dynamic stability systems that adjust or limit speed based on load and conditions. Regular inspection of load securing, tires, and brakes supports maintaining appropriate lasthastighed.