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.