French Highway A86
See also: A86 (homonymy)
The highway A86 (Parisian super-peripheral) is a French Autoroute which forms an almost complete loop around Paris, remotely variable between 5 and 7 km of the Parisian peripheral.
It is the second of the four loop lines of Paris with the ring road, the Francilienne and the Grand by-pass Paris.
Its essential function is to connect between them the prefectures and sub-prefectures of the small Parisian crown in the Années 1960, Antony, Creteil, Bobigny, Saint-Denis, Nanterre and Versailles.
Circulation
A86 highway is very borrowed by the franciliens from the rush hours in worked week, particularly the morning and in end of the afternoon at the exit of the offices. It makes it possible to move suburbs with suburbs and to sail round Paris by avoiding the peripheral . It made it possible to replace in this function RN 186, the latter having is disappeared when the layout of A86 merged with his is preserved a character of urban axis.
Several parts of A86 are covered or in tunnel:
-
Antony (cover in progress), the construction of this tunnel destroyed a section of an underground aqueduct, produced for Catherine de Médicis in 1610, a plate on the southern wall into formless the motorists. Placed rather high, this plate is practically invisible, only the passengers of coaches during congestions can discover it.
- Bobigny
- Vélizy (tunnel and cover in construction)
Difficulties in the east
A86 has a section common with the A4 to the level of Nogent-sur-Marne and Joinville-le-Pont in the two directions. This section comprises only 4 ways of each side, which creates a bottleneck (before the common section, A4 has three ways and A86 two, there is thus a reduction from five to four ways) and has as a consequence of large congestion S which are reflected on ten kilometers on average on the two highways, including in hollow period (vacation). In 2005, in order to unchoke circulation, work were begun to open two new ways, one in each direction. Work finished in July 2005, the auxiliary traffic lanes were brought into service as of September 2005. These ways are open only to the rush hours, allowing a dynamic management of the exploitation: when circulation slows down, the Hard shoulder is removed and becomes a lane (it is not essential any more because of fallback speed); this is done by:- of the panels of dynamic information, which indicate if the way is opened or closed;
- a mobile barrier of 69 m which is placed in diagonal of the way when this one is closed, and is folded back along the safety fence when it is open; it is supplemented barriers of dissuasion from 25 m located along the road, which prevent from borrowing this way uninterrupted when it is closed but allows the emergency stop.
Difficulties in the west
After an important delay due to the opposition of associations refusing a layout on the surface, with legal problems at the time of the concession then by a hardening of the security standards following the catastrophe of the Tunnel of Mont Blanc, a tunnel in the Parisian West between Bridge-Colbert Versailles and Rueil-Malmaison are in the course of construction. It will make it possible “to buckle” A86. It will constitute the only part with toll of the way. Its construction and its exploitation were conceded with Cofiroute. The choice selected is that of a tunnel monotube, less expensive but which because its reduced height will be accessible only to the light vehicles (other projects proposed tunnels Bi-tubes). The vehicles in the North-South direction will circulate in lower part of the vehicles in the direction south-north, with a height under ceiling of 2m55 in each direction. Speed will be limited there to 70 km/h. An exchanger is envisaged with the A13 with Vaucresson. Initially envisaged in 2 X 3 ways, it is finally built in 2 X 2 ways with a way of emergency stop
The first part of the western tunnel, connecting Rueil-Malmaison to the A13, was dug between November 2000 and on October 14th, 2003 and must be brought into service at spring 2008. The second part, connecting the A13 to Bridge-Colbert Versailles, was dug between June 2005 and on August 24th, 2007 and must open running 2010.
The heavy vehicles will owe, as for them, to continue to carry out a more important skirting, such as it exists today, knowledge to borrow (south in north) RN 286 between Bridge-Colbert-Versailles and Saint-Quentin-in-Yvelines, the A12 until Rocquencourt, RN 186 to the Marly Port and RN 13 until Rueil-Malmaison. A third tunnel is being studied between the A12 (with height of Bailly) and Rueil-Malmaison, where will be able to circulate the heavy vehicles.
In addition to the heavy trucks, the two wheels are also prohibited of tunnel what seems it constitutes a first in France. The explanations given call upon a maximum height of 2m or the fact that the motorcyclists are a factor of stress for the motorists. Several associations of motorcyclists whose FFMC78 try to convince the manager of the tunnel of the strangeness of this prohibition.
External bonds
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Project of unchoking of the common section with A4
- Sytadin, road information and traffic in real-time on the Ile de France
- a86 highway on Cofiroute
- Work of looping of the highway of which the point of the FAQ on the prohibition of the motor bikes
- File of the FFMC78 on the prohibition of Western a86 tunnel
- A86 Highway in Saratlas
- cover of a86 highway in Antony
- cover of a86 highway in Vélizy-Villacoublay
- highway Card of A86 on WikiSara
- Dialog for the installation of the base joint to the highways A4 and A86
- A86 in photographs on FranceAutoroutes
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