History
Note: This section refers to countries driving on the right. For countries that drive on the left, reverse right and left.
An experiment was done in Illinois, United States to allow going straight on red (following rules analagous to those used for turns on red) when approaching a T junction on the main road, with the intersecting road on the left. It was a failure. However, at some T junctions where the main road includes at least two lanes on the side away from the intersecting road, the farthest (rightmost, in areas where traffic drives to the right) lane is given the right of way to proceed straight through the intersection at all times, denoted by a "green arrow" signal if a traffic light is installed at the intersection. In such cases, often that lane is also specially delimited with pavement markings or other lane separation devices, to keep left-turning traffic on the intersecting road from colliding with traffic proceeding through the intersection on the main road. The seagull intersection was developed as a safer variation of this.
Read more about this topic: Seagull Intersection
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—Ralph Waldo Emerson (1803–1882)
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—Sébastien-Roch Nicolas De Chamfort (1741–1794)