Editing Three-way junction (section)

==Variations==
An experiment was done{{By whom|date=September 2012}}{{When|date=September 2012}} in [[Illinois]], United States to allow going straight on red (like a [[right turn on red]]) when approaching a T junction on the main road, with the intersecting road on the left. It was a failure.<!--god damn, the UCF library catalog search is down or I'd give the source-->  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. There are now safer variations of this, called '''[[seagull intersection|continuous green-T (or seagull) intersection]]s''', that have a left turn lane off the main road either [[channelization (roads)|channelized]] or otherwise separated from traffic going straight, which allows for a traffic signal on only one side of the road.<ref>An Applied Technology and Traffic Analysis Program ({{cite web |url=http://attap.umd.edu/UAID.php?UAIDType=6&Submit=Submit&iFeature=1 |title=ATTAP |access-date=2007-10-12 |url-status=dead |archive-url=https://web.archive.org/web/20120208143546/http://attap.umd.edu/UAID.php?UAIDType=6&Submit=Submit&iFeature=1 |archive-date=2012-02-08 }})</ref>