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- Application layer – SAE J1939/71
- Data link layer – SAE J1939/21 (FMS data are coded according to SAE J1939)
- Physical layer – ISO 11898-2 High-speed CAN, 250 kbit/s bus speed
- Physical connectors – Not standardized
| time | version | common name | notes |
|---|---|---|---|
| 2002 | 1.0 | Truck FMS Standard | Initial release |
| 2007 | 00.01 | Bus FMS Standard | Specialized for buses and coaches including specific signals like door openings, etc. |
| 2010 | 2.0 | Truck FMS Standard | It took over some signals from the Bus FMS Standard, but still handled separately for Trucks. |
| 2012 | 3.0 | FMS Standard |
| Harmonized Bus and Truck standard ( |
| with separated sections inside for buses and trucks). |