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Right turn on red, or simply right on red, is a principle of law permitting vehicles at a traffic light showing a red signal to turn right (almost always after a complete stop) when the way is clear, in a country with right-hand traffic. It is intended to allow traffic to resume moving, with minimal risk provided that proper caution is observed. ==North America== Right turns on red are permitted in many regions of North America. While Western states have allowed it for more than 50 years; eastern states amended their traffic laws to allow it in the 1970s as a fuel-saving measure in response to motor fuel shortages in 1973 and 1979. All 50 states, the District of Columbia, Guam, and Puerto Rico have allowed right turns on red since 1978, except where prohibited by a sign or where right turns are controlled by dedicated traffic lights. (In June 1978, Maryland became the last state to allow right turns on red. Right turns on red became legal in the District of Columbia in November 1978.) The few exceptions include New York City, where right turns on red are prohibited, unless a sign indicates otherwise. In some states, such as New York〔(【引用サイトリンク】work= Online Driver's Manual and Study Guide )〕 and California, a right turn on red is prohibited when a red arrow is displayed. At intersections where U-turns are permitted and controlled by a u-turn arrow from the left-most lane, motorists turning right on red onto the same road must yield to those making U-turns before turning, as the motorists making U-turns have the right of way and a collision could easily occur. At intersections where U-turns are prohibited in the same fashion, a green right turn arrow will sometimes appear with the red light for those turning right onto the road, allowing only traffic turning right to proceed without having to stop or yield to other vehicles. Some states such as California have "No U-Turn" signs posted at these intersections because of the green right turn arrow. Most Caribbean countries with right-hand traffic, such as the Dominican Republic, allow right turn on red unless a sign prohibits it. Some vehicles, such as those carrying hazardous materials and school buses, are not allowed to turn on red under any circumstance and must wait for a green light or arrow. During 1982–1992, approximately 84 fatal crashes per year occurred in the U.S. where a vehicle was turning right at intersections where right turn on red was permitted. As of 1992, right turn on red is governed federally by (c) ("Each proposed State energy conservation plan to be eligible for Federal assistance under this part shall include: ...(5) a traffic law or regulation which, to the maximum extent practicable consistent with safety, permits the operator of a motor vehicle to turn such vehicle right at a red stop light after stopping, and to turn such vehicle left from a one-way street onto a one-way street at a red light after stopping."). All turns on red are forbidden in New York City unless a sign is posted permitting it. Through most of Canada, a driver may turn right at a red light after coming to a complete stop unless a sign indicates otherwise. In the province of Quebec, turning right on a red was illegal until a pilot study carried out in 2003 showed that the right turn on red manoeuvre did not result in significantly more accidents. Subsequent to the study, the Province of Quebec now allows right turns on red except where prohibited by a sign. However, owing to locally specific safety concerns, it remains illegal to turn right on a red anywhere on the Island of Montreal.〔(mtq.gouv.qc.ca )〕 Motorists are reminded of this by large signs posted at the entrance to all bridges. In Mexico, right turns on red are generally prohibited unless a sign indicates otherwise, and motorists can be issued a citation for noncompliance.〔(cbrd.co.uk )〕 However, right turns on red are allowed in Mexico City.〔(Reglamento de Tránsito del D.F. Título 4 ), artículo 66, inciso IX〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Right turn on red」の詳細全文を読む スポンサード リンク
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