This paper describes a test track based lane departure warning (LDW) evaluation performed by the National Highway Traffic Safety Administration (NHTSA). NHTSA defines an LDW system as one intended to alert the driver whentheir vehicle is about to drift beyond a delineated edge line of their current travel lane. LDW system alerts consist of audible, visual, and/or haptic warnings, or any combination thereof. The test maneuver described wasdesigned to emulate a lateral drift while travelling on a straight road. This type of maneuver was chosen because it represents one of the most dominant pre-crash scenarios as reported in the 2004 General Estimates System(GES) database. LDW performance was quantified by considering the vehicle's proximity and approach rate to the inboard edge of a single lane line at the time of the LDW alert. Variations in how the alerts were presented to the driver, and the manner in which the timing of the alerts changed as a function of the lateral velocity toward the lane line, were observed. The full text of this paper may be found at: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv21/09-0559.pdf For the covering abstract see ITRD E145407.
Abstract