Each vehicle was instrumented to capture detailed data on the driving environment, driver behavior, warning system activity and vehicle kinematics. Data on driver acceptance are collected through post-drive surveys and debriefings.

The University of Michigan Transportation Research Institute analyzed the data and found that the integrated crash warning system results in improvements in lane-keeping, fewer lane departures and increased turn-signal use.

Both the passenger car and commercial drivers accepted the integrated crash warning system and benefited from improved awareness of vehicles around them. No negative behavioral-adaptation effects of using the integrated system were observed in either driver group.

You may download the report at nhtsa.gov/DOT/NHTSA/NVS/Crash%20Avoidance/Technical%20Publications/2011/811482.pdf