Integrated Vehicle-Based Safety Systems (IVBSS): Phase I Interim Report

NHTSA · 2008 · ROSA P / United States. Joint Program Office for Intelligent Transportation Systems

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Summary

This interim report details the progress of Phase I (November 2005–April 2008) of the Integrated Vehicle-Based Safety Systems (IVBSS) program, a cooperative research initiative led by the University of Michigan Transportation Research Institute (UMTRI) and sponsored by the U.S. Department of Transportation. The program addresses the significant safety problem posed by rear-end, road departure, and lane-change/merge crashes, which accounted for approximately 60% of police-reported crashes and 50% of crash-related fatalities in the United States in 2003. The primary motivation for IVBSS is to assess the safety benefits and driver acceptance of an integrated crash warning system that combines these three subsystems, aiming to improve performance over standalone systems by increasing reliability, reducing false warnings, and enhancing driver reaction times through coordinated data sharing and warning arbitration. The Phase I methodology focused on system specification, design, development, and the construction of prototype vehicles for both light vehicles and heavy commercial trucks. The research team, which included industrial partners such as Honda, Eaton, and International Truck, developed functional requirements, system architectures, and performance guidelines for both platforms. Key activities included identifying sensor suites, developing driver-vehicle interfaces (DVI), and conducting human factors experiments to optimize warning strategies. The team built and integrated subsystems into eight prototype vehicles: six Honda Accords for the light-vehicle platform and surrogate vehicles, including a Chevrolet Suburban with a trailer and International tractors, for the heavy-truck platform. Verification testing was conducted through both on-road trials and controlled test-track scenarios to evaluate system functionality. The findings from Phase I verification tests demonstrated the viability of the integrated systems. On-road tests assessed nuisance alert rates and system availability, while test-track tests evaluated the system’s ability to warn drivers in specific crash scenarios, including forward crash, lateral drift, lane change, and multiple-threat situations. The report documents the results of these tests, noting the breakdown of alerts and the performance of the warning systems under various conditions. Additionally, human factors testing provided insights into driver responses to auditory warnings and the effectiveness of shared warning strategies. The development of the DVI included the selection of warning sounds and the placement of visual displays and controls within the vehicle cabins. The significance of this work lies in the successful development of a comprehensive, integrated crash warning system that moves beyond isolated subsystems. By demonstrating the technical feasibility of integrating sensor data and warning arbitration for both light vehicles and heavy trucks, the IVBSS program lays the groundwork for Phase II, which involves the deployment of a fleet of IVBSS-equipped vehicles for field operational tests. The report concludes that the integrated approach has the potential to provide comprehensive, coordinated information to drivers, thereby improving overall crash avoidance performance and driver acceptance. This interim report serves as a critical milestone in the broader effort to reduce crash-related fatalities and injuries through advanced vehicle safety technologies.

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• dms validation

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• Applied Guidance: design guidelines
• Methodological Resource: tool software, validation psychometrics