Front Loading In-Vehicle Traffic Light Visibility Requirements for Driver as per Indian Road Standards 2017-28-1932
Traffic awareness of the driver is one of the prime focus in terms of pedestrian and road safety. Driver experience plays a significant role and driving requires careful attention to changing environments both within and outside the vehicle. Any lapse in driver attention from the primary task of driving could potentially lead to an accident. It is observed that, lack of attention on the ongoing traffic and ignorant about the traffic information such as traffic lights, road signs, traffic rules and regulations are major cause for the vehicle crash. Traffic signals & signage are the most appropriate choice of traffic control for the intersection, it is important to ensure that driver can see the information far away from the intersection so that he/she can stop safely upon viewing the yellow and red display. Then, upon viewing the signal operations and conditions the motorist can stop his/her vehicle successfully before entering the intersection. Ensuring adequate in-vehicle visibility for drivers is important for their traffic awareness including, traffic light and road signs visibility etc. Setting target for traffic light visibility/upward visibility is very crucial especially the front-end design including windshield rake angle, DGO, BCP width etc. largely depend on the set visibility targets. In this paper, factors influencing the traffic light for the driver with real world usage scenario explored and target front loading, virtual evaluation and validation of the traffic light visibility also explained.