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Year One Done: IVBSS Drives Ahead

May 17, 2007

The Integrated Vehicle-Based Safety Systems (IVBSS) program, led by UMTRI, aims to prevent crashes by developing in-vehicle technologies that help drivers avoid making hazardous mistakes.  Details of the first year of the program, including video clips, are now available.


IVBSS combines, as a fully-integrated suite, a set of crash-warning subsystems that address the three most common types of crashes: rear-end, road-departure, and lane-change/merge crashes. These three crash types account for 59 percent of all police-reported crashes and a significant amount of fatalities in the U.S. each year. IVBSS, which is being developed for both light vehicles and heavy trucks, integrates the following crash warning subsystems:

  • Lateral-drift warning (LDW), which warns drivers that they may inadvertently be drifting from their lane or the roadway.
  • Forward-crash warning (FCW) , which provides warnings to drivers to assist them in avoiding or mitigating rear-end crashes with other vehicles.
  • Lane-change/merge (LCM) warning, which includes full-time, side-object-presence indicators, as well as warnings of possible unsafe maneuvers based on adjacent or approaching vehicles in adjacent lanes.
  • Curve-speed warning (CSW) , which warns drivers that they may be driving too fast into an upcoming curve (implemented on the light-vehicle platform only).

This four-year cooperative agreement is sponsored by the U.S. DOT and led by UMTRI in cooperation with partners Visteon Corporation, Eaton Corporation, Cognex Corporation, Honda R&D Americas, Inc., International Truck Corporation, Con-Way Freight, Battelle, and the Michigan Department of Transportation.

The goal of the project is to assess the maturity, safety benefits, driver acceptance, and possible market penetration of a state-of-the-art IVBSS. The project will include the design of a system architecture that allows sharing sensor data, the arbitration of multiple warnings that occur in close temporal proximity, and the design of a driver-vehicle interface that ensures that drivers can clearly and rapidly interpret the warnings.

Significant progress was made in the first year of the IVBSS program, primarily in system design, development, and specification. Eight performance and development deliverables were completed on both light-vehicle and heavy-truck platforms. Candidate auditory warning sounds were created and empirically studied. Warning scenarios were defined, and objective tests for current hardware implementations were successfully designed. Development vehicles were outfitted with subsystem hardware and software. Preliminary development and specification of the driver-vehicle interfaces (visual, audio, and haptic information provided to the driver) on both platforms were completed. To support the development of IVBSS on both platforms, data acquisition systems that permit the collection of data from the developmental vehicles were designed.

What's Next for IVBSS

As the project transitions into its second year, key goals and tasks include: building up additional developmental vehicles, finalizing the objective test procedures, conducting test-track and on-road verification testing, completing human factors studies at UMTRI to support driver-vehicle interface development, further developing the data acquisition systems, and preparing for the field operational test (FOT).

In future years, a representative population of more than one-hundred drivers will drive a fleet of sixteen sedans and ten heavy trucks under the conditions in which they normally drive. This FOT will aid the development of future crash warning systems by identifying and addressing challenges associated with warning system integration from hardware, software, and end-user perspectives.

More Information

For additional details about IVBSS: