Abstract
The purpose of this research is to investigate the forward direct field of view required for urban road driving by truck drivers. We termed this the drivable field of view (DFV). To obtain the DFV, we recorded subjective ratings of visual driving cue perceptibility when the driver's field of view was changed using a blind. The driver drove in a straight line, along a right and left curve, and through on intersection of a simulated urban road. The subjects evaluated the visual driving cue perceptibility on a 5 point scale. The DFV so defined extends from 1 degree above horizontal to 16 degrees below horizontal, and 55 degrees left to 15 degrees right of the driver's eye point centerline.