Control panel road of danger in France

This article is devoted to the control panels of danger in France of the type has .

Object of the indication of danger

The object of the indication of danger is to draw in a very special way the attention of the road users at the places where them vigilance must redouble because of the presence of obstacles or dependant dangerous points:

is with the structure even of the road: turns, blackcurrant or hogback, narrowed roadway;
is with the state of the road or its environment slippery pavement, falls of stones;
is with provisions adapted to the meeting of other transportation routes: opening bridge, grade crossing gate;
is with the circulation terms of the vehicles and the pedestrians: place attended by the children, circulation with double direction succeeding a section with one way;
with local provisions or circumstances left factory, vicinity of a career exploited with the mine.

The indication of danger is carried out with the assistance:

of panels of the type has for the current dangers ,
of panels of the type G for the indication of position of the crossings level
of beacons of the type J

Characteristics

The panels of danger have the shape of equilateral triangles whose lower side is horizontal.

For dimensions and ranges, to see: detailed article “control panel in France”

The permanent panels of danger are at white zone. The symbols and, if necessary, the inscriptions are black. Fires of a17 panel are tricolor. The symbol of a24 panel is red. The panels are surrounded by a red band bordered itself by a white listel.

The panels of danger are obligatorily rétroréfléchissants.

List signals of danger

There exists in France 29 signals of danger.

See also: List of the road signals of danger in France

Establishment of the panels

Outdistance danger

The panels of danger, except a18 panel, are always established with a distance from the danger of:

Except agglomeration, between 100 and 200 m, as near as possible to 150 m, except serious special difficulties or advantages marked to modify it, in particular to improve the visibility of the signal or to take account of the speed of the vehicles

In agglomeration, between 0 and 50 m, as near as possible to 50 Mr.

They are supplemented by a sign of M1 distance only if the distance from establishment is different from that above defined. One can use this possibility to increase the distance from establishment which should not exceed 400 m except agglomeration and 150 m in agglomeration. The panel is then repeated halfway approximately. The two panels carry in this case of the signs of M1 distance.

Side of the roadway

The signals of danger are normally established right-sided of the roadway in the direction of circulation.

They can be repeated on the other side of the roadway when the conditions are such as it are likely not to be seen in time by the drivers to which they are addressed, as for the roads with more than two ways. They can also be repeated above the roadway. It must then be either enlightened or rétroréfléchissants.

Side distance

Except constraint of site, the distance between the balance of the end of the panel located on the side of the roadway and the bank close to this end should not be lower than 0,70 Mr.

In open country , the panels are placed apart from the zone located in edge of roadway and treated in such way that the users can engage there an operation of redirection or braking known as “zone of recovery”, or their support at least to 2 m of the edge close to the roadway, unless particular circumstances are opposed to it (narrow verges, presence of a plantation, a cycle track, a railway, etc).

In agglomeration , the panels are established so that the support obstructs the least possible the circulation of the pedestrians.

The support of a signal can also be established on a property bordering or anchored to a frontage after agreement of the owner or by application if that is possible Order in Council of October 30th, 1935 and decree 57180 of February 16th, 1957.

Height above the ground

In open country

The lawful height is fixed in theory at 1 m (if several panels are placed on the same support, this height is that of the lower panel), height generally ensuring the best visibility of the panels struck by fires of the vehicles.

It can be modified taking into account the local circumstances:

either to ensure a better visibility of the panels,
or to prevent that they mask circulation.

In agglomeration

In the agglomerations profiting from a public lighting, the panels can be placed at a height going up to 2,30 m to hold account in particular vehicles which can mask them, as well as need for obstructing only at least the circulation of the pedestrians.

Above the roadway

When the panels are on gantry, bracket or high-mast above the roadway, they are fixed at a minimal height corresponding to the gauge of the road to which is added a revenge of 0,1 m for the maintenance of the roadway and a revenge of 0,50 m for the protection of indication.

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