This report presents the methodology and results of the independent evaluation of a prototype integrated crash warning system for light vehicles as part of the Integrated Vehicle-Based Safety Systems initiative of the United States Department of Transportation's Intelligent Transportation System program. The system integrates rear-end crash, curve-speed warning, lane change crash, and lane departure warning functions. The goals of the independent evaluation are to assess the safety impact, gauge driver acceptance, and characterize the capability of the integrated safety system. The evaluation is based on naturalistic driving data collected from a field operational test using 108 subjects who drove 16 passenger vehicles equipped with a prototype integrated safety system and a data acquisition system. The test subjects accumulated over 213,000 miles during a 12-month period throughout parts of southeast Michigan. For each driver, the test period was divided into a 12 day baseline condition with the system disabled and a 28 day treatment condition with the system enabled to compare the effect of the system on driving performance. The results of the analysis suggest that driving with the integrated safety system improves driver behavior and increases driver safety, that drivers feel that the system provides a safety benefit, and that the system alerts had a high degree of accuracy. This report delineates the methodology of the different analyses and discusses their results.

This report presents results from the independent evaluation of a field operational test using a fleet of heavy trucks outfitted with a prototype integrated crash warning system. This effort was conducted as part of the U.S. DOT's Integrated Vehicle-Based Safety Systems (IVBSS) program. The system tested included rear-end, lane-change/merge, and lane departure crash warning functions. The goals of the evaluation were to assess safety impact and driver acceptance, and to characterize the prototype system's warning capabilities. Eighteen volunteer drivers from a commercial fleet operated the 10 equipped heavy trucks, accumulating 600,000 miles over a 10-month period. The test period consisted of 2 months of baseline driving, when the system was disabled, and an 8-month treatment period, when the system was enabled and warnings were presented to the drivers. Comparisons were made between baseline driving and the treatment period to determine the effect of system use on driver behavior and performance.

This report presents results from a series of on-road verification tests performed to determine the readiness of a prototype integrated warning system to advance to field testing, as well as to identify areas of system performance that should be improved prior to the start of the field test planned for 2009. Data was collected from tests conducted on public roads using a 2007 Honda Accord equipped with the prototype safety system. The system provides forward crash warning (FCW), lane departure warning (LDW), curve speed warning (CSW), and lane change/merge (LCM) functions, managed by an arbitration function that addresses multiple crash threats. The objectives of the on-road tests were to drive the test vehicle in an uncontrolled driving environment to measure the system's susceptibility to nuisance alerts, assess alerts in perceived crash situations, and evaluate system availability.

This report presents results from a series of on-road verification tests performed to determine the readiness of a prototype integrated warning system to advance to field testing, as well as to identify areas of system performance that should be improved prior to the start of the field test planned for 2009. Data was collected from tests conducted on public roads using an International 8600 heavy truck equipped with the prototype safety system. The prototype system provides forward crash warning (FCW), lane change merge (LCM), and lane departure warning (LDW) functions managed by an arbitration function to address multiple crash threats. The objectives of the on-road tests were to operate the heavy truck in an uncontrolled driving environment to measure the system's susceptibility to nuisance alerts, assess alerts in perceived crash situations, and evaluate the system availability.