FMS-Standard

For the broader software category, see Fleet management system.

The Fleet Management Systems Interface (FMS) is a standard interface to vehicle data of commercial vehicles. The six European manufacturers Mercedes-Benz, MAN, Scania, Volvo (including Renault), DAF and Iveco developed the so-called FMS-Standard in 2002 to make manufacturer-independent applications for telematics possible.[1] The standard allows third-party fleet management software and hardware, such as a GPS tracking unit, to access vehicle data without connecting directly to the internal CAN bus.

The following telemetry data are broadcast at the FMS interface:[2]

  • Vehicle speed (wheel based)
  • Vehicle speed (from tachograph)
  • Clutch switch (on/off)
  • Brake switch (on/off)
  • Cruise control (on/off)
  • PTO (Status/Mode)
  • Accelerator pedal position (0–100%)
  • Total fuel used
  • Fuel level (0–100%)
  • Engine speed (RPM)
  • Gross axle weight rating (kg)
  • Total engine hours (h)
  • FMS-Standard software version
  • Vehicle identification number (VIN)
  • Tachograph information
  • High-resolution vehicle distance
  • Service distance
  • Engine coolant temperature

The data are coded according to the SAE J1939 protocol. The repetition rate of the data is between 20 ms (e.g., engine speed) and 10 seconds (e.g., vehicle identification number).

The FMS standard enables fleet telematics systems to have manufacturer-independent applications and evaluations of the data. This allows fleet operators to use a single software platform to manage a mixed fleet of vehicles from different manufacturers.[3]

According to a note from the truck manufacturers, the FMS standard is seen as a worldwide standard. A direct connection to the internal vehicle bus system is not permitted by the truck manufacturers and could lead to the loss of warranty.

According to the ACEA, approximately 160,000 vehicles were fitted with an FMS standard interface in 2007. By 2019, more than 400,000 trucks were using FMS in North America.[4]

The FMS-Standard was also the base for the Bus-FMS-Standard for buses and coaches, which was published in 2004.

References

  1. ^ "FMS-Standard: The interface to your truck". FMS-Standard.com. Retrieved September 23, 2025.
  2. ^ "FMS Interface Description". FMS-Standard.com. Retrieved September 23, 2025.
  3. ^ Hjelm, J. (2008). "Daytime visibility range monitoring through use of a roadside camera". 2008 IEEE Intelligent Vehicles Symposium. pp. 1039–1044. doi:10.1109/IVS.2008.4621200. ISBN 978-1-4244-2568-6.
  4. ^ "Navistar Taps Telematics to Gain Intelligence on Truck Rivals". Trucks.com. 17 December 2019. Archived from the original on 2020-01-13.
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