Vehicle coordinate system

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Vehicle coordinate system and angle ( English body frame ) of cars and other land vehicles - on the right the outer coordinate system used as a reference ( English world frame )

A vehicle coordinate system is a three-dimensional Cartesian coordinate system that is permanently connected to the vehicle. A right-handed coordinate system is chosen.

When using CAE techniques ( computer-aided engineering , especially CAD and CAQ), knowledge of the respective vehicle coordinates is important so that all simulated components can always be put together in the correct position to form a virtual vehicle. The x-axis points backwards , the z-axis upwards .

In driving dynamics , it is used to describe the spatial position of the sprung mass in relation to the stationary coordinate system (DIN ISO 8855). The x-axis points forwards , the z-axis upwards . The orientation is defined by three Euler angles (yaw angle, pitch angle, roll angle).

In aviation , according to DIN 9300, the x-axis is directed to the front and the z-axis is directed downwards .


  • Hans-Hermann Braess, Ulrich Seiffert: Vieweg manual automotive technology. 2nd edition, Friedrich Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig / Wiesbaden, 2001, ISBN 3-528-13114-4
  • German Institute for Standardization V. (Ed.): DIN ISO 8855 Road vehicles - vehicle dynamics and driving behavior - terms (ISO 8855: 2011) . November 2013.