도로교통법상 삼색 교통신호등과 보조표지 운용 실태 및 개선 방안 연구 (‘좌회전 전용’ 화살표 삼색 신호등을 중심으로)

Abstract

Currently, the existing "Four-color Signal System" and the new "Tricolor Signal System" coexist on domestic roads, which does not meet the international standard "Vienna Convention" and is also different from the US standard "MUTCD." In addition, the "left-hand-only arrow tricolor traffic lights" and the "auxiliary sign" are installed at the top of the straight road, not the "leave for left turn," causing instant confusion for drivers passing through this place, which acts as a risk factor for traffic accidents. In addition, the "contents and specifications of auxiliary signs" that guide the use of traffic lights are not unified, which also causes confusion for drivers and hinders the city's aesthetics.In order to solve these problems, the government authorities expect to establish and actively promote the following short-term and mid- to long-term improvement measures. First, in principle, the 'left-hand-only arrow tricolor traffic lights' should be installed at the top of the 'left turn only lane'.The reason why the arrow three-colored traffic light indicating a left turn cannot be installed at the top of the left-handed lane is usually when the signal hanging from the traffic light is 'side column type horizontal type' and is installed on the right sidewalk. Therefore, to solve this problem, if there is an appropriate space on the median at the intersection, the signal should be relocated to that point, otherwise, an additional budget should be secured to replace the signal itself with a 'door type'.Second, the 'contents and specifications of auxiliary signs' that guide the use of the current tricolor traffic lights should be unified.In particular, there are currently three types of auxiliary signs attached to the top of arrow traffic lights for left turn only, and in the future, it will be necessary to unify them into one ("left turn only") and the standard will not cause confusion for drivers and help improve the city's aesthetics.Third, in the mid- to long-term, the current traffic signal system, which is a mixture of "tricolor traffic lights" and "four-color traffic lights," should be unified into the international standard "tri-color signal system" to maintain consistency.