| Published in Tourist Info / Highways |
A12 autoroute, Autoroute de Bretagne, France
Plan of French A12 motorway. 
Autoroute A12, formerly known as the Autoroute de Bretagne (Motorway of Brittany), is a French autoroute located in Yvelines, near Paris. It branches off from A13 (also known as the Motorway of Normandy) at an exchange known as the Triangle de Rocquencourt located in the town of Bailly and merges with RN12 and RN10 at Bois-d'Arcy. Its total length is 8.5 km (5.3 mi). Access is free.
It has not been lengthened since its construction, which makes it the oldest French motorway to have remained on its original route.
There are plans to extend the A12 in the medium-term (2015–2020) up to Ablis and the A11. It is anticipated that the route will go around the town of Trappes. Beyond that point, the existing highway N10 will be reused.
Length: 8,5 km (5,3 mi)
Speed limit: France has the following speed limits for limited access roads classified as motorways:
• Under normal conditions - 130 km/h (80 mph)
• In rain or wet road conditions - 110 km/h (70 mph)
• In heavy fog or snowy/icy conditions - 50 km/h (30 mph)
Limited access roads classified as express roads have lower speed limit (90 or 110 km/h, 55 or 70 mph).
In normal conditions, there is a minimum speed of 80 km/h (50 mph) in the lane most left (no minimum speed on the others' right lanes, but speed should be adapted for each situation: not too slow).
Junctions
The motorway links to the following additional motorways and major roads:
— A13 autoroute
— D134 (Route départementale), Saint-Cyr-l'École
— N12 (Route nationale)
— A12B autoroute (entrance only)
— N10 (Route nationale), Montigny-le-Bretonneux (Saint-Quentin-en-Yvelines)
Source
• www.wikipedia.org
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