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Trailer Stiffness Measurements

  • Trailer stiffnesses were measured on eight trailers.  The measurements were done by applying a moment to the front of the trailer and measuring the amount of twist at various points along the length of the trailer.  These measurements give the overall stiffness, along with the suspension and trailer body stiffnesses. Stiffness Table

Measured Vehicle Inertial Parameters - NHTSA's Data Through November, 1998

  • An updated version of NHTSA's Vehicle Inertial Parameter Measurement Database (VIPMD) is now available for download.

  • The National Highway Traffic Safety Administration's (NHTSA) Light Vehicle Inertial Parameter Database contains measured passenger vehicle inertial parameters. This updated database contains the original 414 entries (as described in SAE paper No. 930897) plus an additional 82 new entries, for a total of 496. The majority of the entries contain complete vehicle inertial parameters, some of the entries contain tilt table results only, and some entries contain both inertia and tilt table results. The noted SAE paper provides a brief discussion of the accuracy of inertial measurements as well as selected graphs of quantities listed in the database for some of the 1998 model year vehicles tested.

  • Download the Vehicle Inertial Parameter Measurement Database (VIPMD)

The Crash Avoidance group at NHTSA VRTC has many datasets available for release to the public for research purposes. Some of the currently available data are described below. More data will be made available in the near future.

U.S. Department of Transportation National Highway Traffic Safety Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
1-800-424-9153 (TTY)