in New York City unless a sign is posted permitting it. In 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, like in New York City, it remains illegal to turn right on a red anywhere on the Island of Montreal. Motorists are reminded of this rule by large signs posted at the entrance to all bridges. In Mexico, right turns on red are generally allowed unless a sign indicates otherwise. Mexico City has implemented a new transit law which prohibits right turns on red. Left turn on red In the U.S., 38 states allow left turns on red only if both the origin and destination streets are one way as of December, 2018. Five states, namely Alaska, Idaho, Michigan, Oregon and Washington, allow left turns on red into a one-way street, even from a two-way. As of December 2018, the following states and territories ban left turns on red: Connecticut, Maine, Missouri, New Hampshire, New Jersey, North Carolina, Rhode Island, South Dakota (unless permitted by local ordinance), the District of Columbia, and Guam. New York City prohibits left turn on red unless a sign indicates otherwise. :File:Québec P-115-1.svg "No left on red" sign used in Canada (except Quebec) In Canada, left turn on red light from a one-way road into a one-way road is permitted except in some areas of Quebec, New Brunswick, and Prince Edward Island. Left turn on red into a one-way road is permitted in British Columbia, even from a two-way road. Some intersections have signs to indicate that a left turn on red is prohibited. In BC, Alberta, Saskatchewan, Manitoba, and Ontario, the sign for "no left turn" is defined with the line in the red circle flipped compared to other prohibitive signs. Although inconsistent, this allows "no left turn" to be a mirror image of "no right turn". However, in Quebec, the diagonal line is the same as in "no right turn". Central America In Costa Rica, right turns on red are allowed in general, but