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On-Board Mass (OBM) Systems

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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.

Category Features Can be used with applications of the NTF (RIM, TMA, IAP)
Category A
  • Accuracy
  • Load management
  • Compliance and safety
Smart OBM Systems Category B All of the above, plus:
  • Data collection
  • Future-ready
  • Productivity benefits (linked to policies and programs made available by road managers and regulators)
Category C All of the above, plus:
  • Full interoperability across different service providers

See also:

  • OBM Factsheet for Transport Operators – coming soon

Type-approved OBM Systems

View Type-Approved OBM Systems

For more information on OBM systems, please contact us.


Last updated on June 23rd, 2020