The present study investigates which layout factors have an impact on the effectiveness of the centre high-mounted stop lamp (CHMSL) during day and night-time conditions. In particular, the study evaluates the effect of a vertical separation between the CHMSL and the horizontal plane of conventional stop lamps and the effect of a single strip of lamps over the whole rear side of the car (one extended stop lamp). While performing a laboratory tracking task, subjects responded to a brake light configuration by depressing a brake pedal. Reaction time measures (speed and accuracy) indicated that a CHMSL located at high locations, away from the horizontal plane of the other rear lights, gave a better performance than a CHMSL located lights, gave a better performance than a CHMSL located adjacent to the horizontal plane of the other rear lights. (A)
Samenvatting