Abstract
This report describes a measurement method that captures the constant lateral position of naturally prevailing vehicles as they are driven on highways. A vehicle equipped with video equipment records episodes of steady lane following for the vehicles ahead of it. Video records are processed off-line to quantify the continuous lateral displacement of the centroid of the license plate on the preceding vehicle relative to the center line of the lanes. This type of data is considered to have value in supporting the development of driver assistance products such as road departure warning and adaptive cruise control (ACC) lane changing aids. (Author/publisher)