About the On-Board Mass (OBM) Functional and Technical Specification
The On-Board Mass (OBM) System Functional and Technical Specification contains requirements for:
- Physical characteristics
- Environmental characteristics
- Data collection
- Record generation
- Functionality
- Data storage
- Data security and transfer
- Interconnection to a Telematics In-Vehicle Unit (IVU)
- Installation, calibration, operation and maintenance.
Categories of OBM Systems
The Specification differentiates OBM Systems into three categories, as detailed in the table below:
| Category | Description |
| Category A | OBM Systems that electronically display mass information to drivers and/or loaders |
| Category B | OBM Systems that collect and transmit mass information to Telematics In-Vehicle Units (IVUs) |
| Category C | OBM Systems that collect and transmit mass information in a standardised way to telematics devices (in accordance with TCA's Interconnectivity Specification) providing ‘plug and play’ capabilities to Telematics In-Vehicle Units (IVUs) |
Request a copy of the OBM System Functional and Technical Specification
A copy of the On-Board Mass (OBM) System Functional and Technical Specification can be obtained by completing the form below.
The Specification will be emailed automatically.
For further information, please contact TCA on (03) 8601 4600 or tca@tca.gov.au