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http://dx.doi.org/10.5762/KAIS.2020.21.6.296

A Study of the Intersection in Reduce Car Accidents for Traffic Signal Light to Supplement  

Park, In-Deok (Department of Electrical Engineering, Daeduk University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.6, 2020 , pp. 296-301 More about this Journal
Abstract
Three types of traffic signal systems are two-color signal systems that flash red and green and are mainly used on crosswalks, next, three-color equalization systems mainly used at T-shaped intersections with red and yellow lights and a green arrow, and third, four-color intersections that generally have red, yellow and green colored lights and a green arrow. In what is known as the "dilemma zone" area, a driver collects information that influences his/her decision whether to stop, speed, tail, interrupt, or violate a traffic light, depending on the intersection width, vehicle speed, cognitive response time and reference yellow signal time. This study examined the impact of changes in the length of the dilemma zone areas based on changes in yellow signal times, the speed of the intersection passages, and signal lamps. Downward adjustments of 50km/h and 60km/h affected yellow signal time. The yellow signal time increased by 0.1 to 2.3[s] due to this effect and the dilemma zone area increased by 1.22 to 26[m]. The driver of the dilemma zone could quickly decide to reduce the time remaining of the straight (3color, 4color) green signal to reduce the potential of a traffic accident at the intersection traffic. Safe entry of red (LED palm) and left-turn signals for entering flashed at the intersection and operated at midnight.
Keywords
Intersection; Dilemma Zone; Quick Judgment; Flashing Signal; Remaining Time;
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