On-Board Mass (OBM) Systems
About OBM Systems
OBM systems are able to measure the mass of axle groups and calculate the gross vehicle mass of a vehicle.
OBM systems are often referred to as on-board weigh scales or electronic weighing systems, and are widely used across the surface transport sector commercial, contractual and regulatory purposes.
TCA grants approval for OBM systems against the On-Board Mass System Functional and Technical Specification, that contains performance-based functional and technical requirements for OBM systems.
Approval may be in the form of type-approval or an equivalent approval mechanism acceptable to TCA. Suppliers of OBM systems must meet applicable requirements in the functional and technical specification, irrespective of the approval mechanism.
Also see:
Specifications
Last updated on 19 March 2025