BlogTransport systems
Static, low-speed and high-speed weighing compared
By Vicky Ogola, Senior ICT Consultant 1 min read
Each weighing method trades speed against accuracy. A load control system combines them to check more vehicles without long queues.
Vehicle weighing is not one technology. Load control programmes usually combine several methods, each suited to a different job.
Static weighing
The vehicle stops on a weighbridge or axle scales. This is the most accurate method and is used where a decision depends on the measurement.
Low-speed weigh-in-motion
Vehicles cross dedicated scales at walking pace, often in a lane beside the station. It is faster than static weighing while keeping good accuracy, and suits sorting vehicles at the station.
High-speed weigh-in-motion
Sensors in the main carriageway measure vehicles at normal traffic speed. Accuracy is lower, so it is used to screen traffic and select vehicles that are likely to be overloaded.
Putting them together
- High-speed screening flags suspect vehicles upstream.
- Flagged vehicles are directed into the station.
- Low-speed or static weighing confirms the result.
- Compliant vehicles carry on without stopping.
The result is wider coverage, shorter queues and decisions based on accurate measurements.
See our axle load control systems.
About the author
Vicky Ogola
Senior ICT Consultant
Vicky Ogola writes about network design, connectivity, data centres and the infrastructure that business systems depend on.