EP1731674B1 - Road signalisation system and process for the realisation of a lane diverter - Google Patents

Abstract

The device has a vertical post (10) placed proximate to a road safety barrier formed by concrete walls (2, 2`), and an arm (13) mounted above the support and freely pivoted around a vertical axis (12). A part (13`) of the arm is made of plastic or light wood material. The arm is mounted pivotally around a horizontal axis (14) perpendicular to the direction of its length so as to pass from a horizontal position to a vertical position or to be inclined towards the height by pivoting around the horizontal axis. Independent claims are also included for the following: (1) a road beacon system, for shrinking or diverting a lane, including a set of road signaling devices (2) a method for deploying or folding a road signaling device.

Description

The invention relates to a road signaling system and method for producing a "tilting bevel".

A folding or deflection bevel is a marking system for neutralizing one or more traffic lanes, constituted by a plurality of signaling barriers extending across the traffic lane (s) to be neutralized, said barriers having a length increasing in the direction of vehicle traffic. For example, said barriers can extend from the median of a highway, so as to neutralize the left lane, or the aisle, so as to neutralize the right lane.

Typically, folding bevels can be made using signs and cones reported on the spot and simply arranged on the road. However, this solution entails a significant danger for the agents in charge of the implementation of the folding bevel, and this especially when the neutralization of the fast lane of a motorway is required. Indeed, in this case, a service vehicle carrying the signs and traffic cones parked on the side and agents must cross several times the road carrying said panels and cones.

This is why the document FR 2,650,846 proposed to equip the median of a highway with safety barriers (metal runners or concrete walls) to which would be attached pivoting arms that could be deployed as needed to form a folding bevel. In this way an officer should cross the roadway once, after which he could deploy the swing arms while remaining in the central reservation, protected by the safety barriers.

Such a solution, however, has the disadvantage that the pivots of said arms protrude from the safety barrier to the traffic lanes, and therefore represent a danger for road users.

For this reason the document EP 0 537 095 proposed a more advanced marking system, in which the pivot is placed on the side of the safety barrier opposite to the traffic lanes. The signaling barrier consists of two arms interconnected by spacers, placed on the other side of the safety barrier and connected to the pivot each by a bent element. This system also has a number of drawbacks: in particular, the bent element protrudes from the side of the traffic lanes and therefore presents a danger for road users. In addition, when the security barrier is constituted by a concrete wall, an opening must be made in the latter to allow to connect the lower arm of the signal barrier to the pivot.

The document FR 2,735,800 discloses three other devices for producing a folding bevel, but none is entirely satisfactory.

The first of these devices comprises a signal barrier consisting of a single arm, connected to a pivot located on the side of the safety barrier opposite the traffic lanes and can pass over it to position itself, in position of fold on the same side. A sign is secured to the end of the arm, pivoting about a horizontal axis to pass over said security barrier. Such a solution does not give complete satisfaction. Indeed, in the absence of a pivot locking device, the panel could oscillate under the effect of the air movement caused by the passage of vehicles, while the actuation of any locking device located at Panel level should be performed in a position dangerous to the operator.

The second device disclosed by the document FR 2,735,800 also includes a signal barrier consisting of a single arm connected to a pivot located on the side of the safety barrier opposite the traffic lanes. In the deployment and folding position, this arm is not higher than the upper edge of said security barrier, but it can pass over it thanks to a vertical translation movement on the along the axis of the pivot. A disadvantage of this device is that dirt or rust can easily accumulate in the translation / pivoting mechanism and block it.

Finally, a third device disclosed by the document FR 2,735,800 is only a variant of the device of the document EP 0 537 095 and has the same disadvantages.

An object of the invention is to overcome the drawbacks of the prior art by proposing a system and a method allowing the realization of a "taper bevel" in conditions of increased security for both agents responsible for its implementation. only for road users.

More specifically, an object of the invention is a road marking system according to claim 1.

In this way, each device of the system can be arranged, in the folded position, entirely on the opposite side to the traffic lanes of the safety barrier, or in the central reservation between two barriers, without any element protruding towards the floor. By safety barrier is meant, for example, a concrete wall or a slide.

• la hauteur dudit support par rapport au sol et la forme dudit bras de chaque dispositif sont choisis de manière à que ledit bras puisse être disposé en position horizontale perpendiculairement à ladite barrière de sécurité routière et passant au-dessus d'elle, pour s'étendre en travers desdites voies de circulation ;

ledit bras porte, le long de sa partie susceptible de s'étendre en travers desdites voies de circulation, des moyens de signalisation routière s'étendant vers le bas jusqu'à un niveau inférieur à la hauteur de ladite barrière de sécurité routière, pour atteindre une visibilité optimale ;
ledit bras comporte, à proximité de son extrémité distale, une béquille qui, lorsque ledit bras est en position horizontale, s'étend jusqu'au sol pour en supporter le poids et en empêcher tout fléchissement ;
chaque dispositif du système peut comporter également :

• un premier moyen de verrouillage, pour bloquer le pivotement dudit bras autour dudit axe horizontal dans une position verticale ; et
• un deuxième moyen de verrouillage pour bloquer le pivotement dudit bras autour dudit axe vertical dans une position parallèle à ladite barrière de sécurité routière et dans une position perpendiculaire à ladite barrière de sécurité routière, dans laquelle ledit bras s'étend en travers desdites voies de circulation ; des tels moyens de verrouillage évitent toute fausse manoeuvre et rendent plus sûres les opérations de déploiement et de repliement du dispositifs ;

ledit bras comporte un contre-poids destiné à faciliter son pivotement autour dudit axe horizontal ;
ledit contrepoids est fixé à un bras de levier s'étendant dans une direction oblique par rapport au bras à partir d'un point dudit bras proche de son extrémité proximale ;
alternativement, ledit bras est monté pivotant autour d'un pivot horizontal fixé entre les deux branches d'un étrier en « U », ledit étrier étant à son tour monté pivotant autour d'un pivot vertical fixé audit support, et dans lequel ledit contrepoids se positionne à l'intérieur dudit étrier en « U » lorsque ledit bras est en position verticale ou inclinée vers le haut ;
le pivotement peut être assuré par deux pivots ou, alternativement, par une liaison de type rotule ;
chaque dispositif peut comporter également un moyen de guidage pour guider les mouvements de pivotement dudit bras le long d'une trajectoire prédéterminée ;
chaque dispositif peut comporter également des moyens d'actionnement pour induire un mouvement de pivotement dudit bras autour desdits axes vertical et horizontal et, de préférence, des moyens de commande pour piloter à distance lesdits moyens d'actionnement, de manière à éviter que des agents soient obligés à traverser des voies de circulation pour déplier ou replier le dispositif ;
au moins la partie dudit bras qui est susceptible de s'étendre en travers desdites voies de circulation est de préférence réalisé en matière plastique, de manière à se décomposer en fragments en cas d'impact avec un véhicule sans danger pour ce dernier. Plus précisément, les éléments structurels du bras peuvent avantageusement être réalisés en chlorure de polyvinyle (PVC), alors que les éléments ayant uniquement une fonction de signalisation peuvent être réalisés en polyester.According to particular embodiments of the invention:

• the height of said support relative to the ground and the shape of said arm of each device are chosen so that said arm can be arranged in a horizontal position perpendicular to said road safety barrier and passing over it, to extend across said lanes;

said arm carries, along its portion likely to extend across said traffic lanes, roadside signaling means extending down to a level below the height of said road safety barrier, to reach optimal visibility;
said arm has, near its distal end, a crutch which, when said arm is in a horizontal position, extends to the ground to support its weight and to prevent any bending;
each device of the system may also include:

• first locking means for locking the pivoting of said arm about said horizontal axis in a vertical position; and
• a second locking means for locking the pivoting of said arm about said vertical axis in a position parallel to said road safety barrier and in a position perpendicular to said road safety barrier, wherein said arm extends across said traffic lanes; ; such locking means avoid false operation and make safer deployment operations and folding devices;

said arm has a counterweight for facilitating its pivoting about said horizontal axis;
said counterweight is attached to a lever arm extending in a direction oblique to the arm from a point of said arm near its proximal end;
alternatively, said arm is pivotally mounted about a horizontal pivot fixed between the two branches of a "U" yoke, said yoke being in turn pivoted about a vertical pivot fixed to said support, and wherein said counterweight is positioned within said U-shaped yoke when said arm is upright or inclined upwardly;
the pivoting can be provided by two pivots or, alternatively, by a ball joint type connection;
each device may also comprise a guide means for guiding the pivoting movements of said arm along a predetermined path;
each device may also comprise actuating means for inducing a pivoting movement of said arm about said vertical and horizontal axes and, preferably, control means for remotely controlling said actuation means, so as to prevent agents be forced to cross lanes to unfold or fold the device;
at least the portion of said arm which is capable of extending across said traffic lanes is preferably made of plastic, so as to break down into fragments in case of impact with a vehicle without danger to the latter. More specifically, the structural elements of the arm can advantageously be made of polyvinyl chloride (PVC), while the elements having only a signaling function can be made of polyester.

Preferably the system comprises between 3 and 7, and preferably 5, signaling devices.

In a preferred application, the supports of said devices are placed between two road safety barriers delimiting the central reservation of a divided road.

• un procédé de déploiement ou de repliement d'un dispositif de signalisation du système de balisage tel que décrit ci-dessus comportant des opérations de pivotement du bras dudit dispositif autour desdits axes horizontal et vertical pour l'amener d'une position de repos horizontale, parallèle à ladite barrière de sécurité et d'un côté de celle-ci opposé à au moins une voie de circulation, à une position opérationnelle horizontale, perpendiculaire à ladite barrière de sécurité routière et s'étendant en travers de ladite voie de circulation ou vice-versa en passant au-dessus de ladite barrière de sécurité ; et
• un procédé de déploiement ou de repliement d'un système de balisage tel que décrit ci dessus comportant le déploiement ou le repliement de chaque dispositif selon le procédé ci-dessus, effectué à partir du dispositif situé le plus en amont dans le sens de la circulation le long de ladite voie de circulation vers le dispositif situé le plus en aval pour le déploiement et effectué à partir du dispositif situé le plus en aval dans le sens de la circulation le long de ladite voie de circulation vers le dispositif situé le plus en amont pour le repliement.

Other objects of the invention are:

• a method of deploying or folding a marking system signaling device as described above comprising pivoting operations of the arm of said device around said horizontal and vertical axes to bring it from a horizontal rest position, parallel to said safety barrier and on one side thereof opposite to at least one traffic lane, to a horizontal operational position, perpendicular to said road safety barrier and extending across said lane or vice -versa passing over said security barrier; and
• a method of deploying or folding a marking system as described above comprising the deployment or folding of each device according to the above method, carried out from the device located furthest upstream in the direction of the traffic along said taxiway to the further downstream device for deployment and from the device furthest downstream in the direction of traffic along said taxiway to the upstream device for folding.

• la figure 1, une vue éclatée d'un dispositif de signalisation du système de l'invention ;
• les figures 2A à 2D les différentes étapes du procédé de déploiement du dispositif de la figure 1.
• la figure 3, le système de balisage de l'invention, constituant un biseau de rabattement ; et
• la figure 4, une vue de détail d'un mode de réalisation alternatif d'un dispositif de signalisation du système de l'invention.

The invention will now be described in detail with reference to the appended figures, which represent:

• the figure 1 an exploded view of a signaling device of the system of the invention;
• the Figures 2A to 2D the different steps of the device deployment process of the figure 1 .
• the figure 3 the marking system of the invention constituting a folding bevel; and
• the figure 4 , a detailed view of an alternative embodiment of a signaling device of the system of the invention.

The figure 1 shows an exploded view of a signaling device 1 of the system according to the invention, placed in the central reservation of a divided road, between two concrete walls 2 and 2 'forming security barriers. Such a device can also be arranged on the aisle, beyond a single security barrier, when it is desired to be able to neutralize a right lane. The device of the figure 1 is "unidirectional", ie it is intended to be used only on the roadway to the right of barrier 2, but a "bidirectional" device, which can be deployed on both roadways, also falls within the scope of the invention.

The device comprises a support consisting of a vertical pole 10 fixed to the ground, supporting a horizontal shelf 11 on which is mounted a vertical pivot 12 ', comprising for example a ball bearing. An arm 13, constituting a signaling barrier, is connected to the vertical pivot 12 'via a horizontal pivot 14' fixed to a stirrup 15.

The arm 13 extends beyond the horizontal pivot 14 ', to carry a counterweight 16 which, when said arm is in a vertical position, is housed inside said stirrup 15. In this way, with minimal effort the arm 13 can pivot about the axis 14 of the horizontal pivot 14 'until it reaches a vertical position.

To facilitate the deployment and refolding of the arm 13, a first locking means 17 is provided to block the pivoting of said arm about said horizontal pivot in a vertical position. Such a locking means is for example constituted by a hook 17 fixed to the stirrup 15, movable so as to retain the arm 13 when in the vertical position.

A second locking means is also provided for locking the pivoting of said arm about the axis 12 of said vertical pivot 12 'in a position parallel to said road safety barrier and in a position perpendicular to said road safety barrier, wherein said arm extends across said traffic lanes. Such a locking means is for example constituted by an elastic metal tongue 18 extending from the stirrup and being able to be housed in two notches 19, 20 formed in the tablet 11. When the arm 13 is parallel to said barrier of road safety, the tongue 18 is housed in the notch 19, and when the arm 13 is perpendicular to said road safety barrier, the tongue 18 is housed in the notch 20. In the case of a "bidirectional" device, a third notch must be positioned symmetrically to the notch 20, so as to allow the locking of the arm 13 in the deployed position across the roadway located on the side of the safety barrier 2 '.

The arm 13 consists of an inner part 13 ', on the side of the horizontal pivot 14', formed by a straight element in the form of a beam, and an outer part 13 'forming a rectangular frame. unfolded, the inner portion remains inside the central reservation, while the outer portion 13 "extends across the traffic lanes. The height of the support 10 with respect to the ground is such that, when the arm 13 is in a horizontal position, its inner part 13 'can pass above the safety barrier 2.

The frame-shaped external part 13 "preferably carries signaling elements 21, which can be dismountable, such as reflecting or lighting devices, intended to increase its visibility .Always to improve the visibility of the traffic barrier it is appropriate that the arm 13 carries at its distal end (that is to say opposite to the horizontal pivot 14 ') a signaling panel 22, which may also be removable, also the signaling means 21 and 22 'extend down to a level below the height of the safety barrier 2: this ensures optimum visibility of the traffic barrier for all road users. upwards, at a height higher than the safety barrier, would not be acceptable in most cases.This is precisely why the movement t pivoting about a horizontal pivot 14 'is necessary, in order to allow the arm 13 to pass above said safety barrier 2.

In order to ensure the safety of the road users it is preferable that the arm 13, or at least its outer portion 13 "extending across the traffic lanes, is made of a frangible material, for example plastic or light wood so as to break easily into fragments in the event of a collision with a vehicle, without danger to the latter.

Near said distal end, the arm 13 carries a stand 23 which extends to the ground to bear the weight when in the horizontal position, so as to avoid any bending. It is observed that the signaling devices for producing a folding bevel known from the prior art, and more particularly documents EP 0 537 095 and FR 2,735,800 mentioned above, do not allow the use of such a stand, which turns out to be one of the advantages of the invention.

In an alternative embodiment, the signaling device 1 may also comprise actuating means (not shown) for automatically performing a pivoting movement of said arm around said vertical pivots 12 'and horizontal 14'. Preferably, the device also comprises control means for remotely controlling said actuating means. These remote control means may be located on the side of the road, or include a portable radio wave or infrared radiation device. In this way, the agents responsible for the implementation of a folding bevel can control said actuating means without having to cross the traffic lanes, which considerably improves their safety.

In another embodiment, a ball joint replaces the pivots 12 'and 14', while allowing a pivoting of the arm 13 about the vertical axes 12 and horizontal 14.

The Figures 2A to 2D show the different steps of the device deployment process of the figure 1 .

The Figure 2A shows the device 1 in its state of rest, with the arm 13 housed in a horizontal position between the two safety barriers 2 and 2 '. The stand 23 touches the ground and prevents any bending of the arm 13, in particular under the weight of the panel 22 and the tongue 18 is housed in the notch 19 to lock the device 1 in this position so as to prevent any accidental movement. It is observed that, in this position, the device 1 is protected, even in the case where a vehicle hit one of the safety barrier 2, 2 '. In addition, the device is protected from gusts of wind and air movements induced by the passage of vehicles, which could possibly damage it.

The first step of the deployment consists of a pivoting movement up the arm 13 around the horizontal pivot 14, represented by the arrow P1.

In the Figure 2B we see the arm 13 in a substantially vertical position, following the pivoting movement P1. The arm 13 is advantageously locked in this position by the hook 17, which is not visible in the figure: this prevents said arm 13 can fall back into a horizontal position following a false maneuver. We observe here that arm 13 need not necessarily reach a perfectly vertical position, but that an upward inclination may be sufficient to enable it, in the following steps, to pass over the safety barrier 2.

From this vertical position, or inclined upwards, the arm 13 performs a pivoting of 90 °, represented by the arrow P2, around the vertical pivot 12, so as to orient its lower side towards the traffic lanes located Beyond the safety barrier 2. Beforehand, the tongue 18 has been released from the notch 19 so as to unlock the device 1.

The Figure 2C shows the device 1 after the pivoting P2, with the lower side of the arm 13 facing said traffic lanes. The tongue 18, not visible, is now housed inside the notch 20, also not visible, so as to prevent any further pivoting around the vertical pivot 12. On the Figure 2C is visible the hook 17, which must be open to release the arm 13 and allow it to perform a downward pivoting movement P3 about the horizontal pivot 14.

Finally, 2D figure shows the device 1 in its deployed state, or operational, with the arm 13 perpendicular to said road safety barrier 2, with its inner portion 13 'passing above it and its outer portion 13 "extending across the lanes.

As in the case of Figure 2A , the stand 23 touches the ground and prevents any bending of the arm 13.

The folding is performed by performing the same operations in the reverse order, and reversing the direction of pivoting movements P1, P2 and P3.

As mentioned above, the unfolding and folding operations can be manual, as in the case shown in the figures, or performed using actuating means, which can be controlled remotely.

As illustrated on the figure 3 , a marking system consisting of five signaling devices according to the invention 1A - 1E, of increasing length in the direction of vehicle traffic (arrow C), forms a taper bevel neutralizing the left lane VR. The arms are preferably deployed progressively, from arms 1A to further upstream from the direction of traffic. The folding is preferably carried out in the reverse order.

The figure 4 shows an alternative embodiment of a signaling device of the system according to the invention. In this device, the "U" yoke 15 is absent and the counterweight 16 'is attached to one end of a lever arm 22 which extends in an oblique direction with respect to the arm 13 from a point said arm 13 near its proximal end. The lever arm 22 also carries two handles 24 to facilitate its grip on the part of the operator in charge of the implementation of the folding bevel. In addition, when the arm 13 is disposed in a vertical position, the lever arm 22 can serve as a support to the ground to make this position more stable.

The figure 4 also illustrates the use of guiding means 30 for facilitating the deployment and folding of the signaling device by guiding the pivoting movements of the arm 13 along a predetermined path. This guide means consists essentially of a curved panel 31 having a slot 32 in the form of an arc, within which said arm 13 passes. It is easily understood that it is possible to move the arm 13 to the inside the slot 32 by a simultaneous pivoting movement about the axes 12 and 14, so that each point of said arm describes an arcuate trajectory. Thus it is not necessary to cut the deployment and folding operations in separate steps: on the contrary, the movement is carried out in a continuous manner, without any danger of false maneuver. Although it has been represented in conjunction with the embodiment of the figure 4 , the guiding device 30 may also be used in conjunction with the embodiment of the figure 1 .

As will be readily understood by the skilled technician, many variations are possible without departing from the scope of the present invention.

For example, the support pole 10 may be replaced by a concrete column. Alternatively, it can be replaced by a removable structure, such as a tripod: in this case, the device can be set up temporarily.

The pivots 12 and 14 may be arranged differently than in the manner described, according to any assembly known in mechanics.

The counterweight 16 may be absent, or possibly be replaced by another balancing device, such as a spring.

The arm 13 can be telescopic. In this way the same alignment of signaling devices could be used "bidirectionally" for the implementation of a folding bevel on two roads with opposite traffic directions.

The locking means described are only examples and can be replaced by any equivalent means. In particular, if actuating means are provided, the latter can at the same time perform a locking function.

A folding bevel with 5 signaling devices has been shown, but it is only an example and a different number of these devices, for example between 3 and 7, can also be used

Claims (17)

1. System of road markers for marking a diversion or narrowing of the carriageway, consisting of a plurality of signalling devices (1, 1A, 1B, 1C, 1D, 1E) aligned at a spacing from one another along at least one carriageway equipped with a road safety barrier (2), characterised in that said devices (1, 1A, 1B, 1C, 1D, 1E) comprise:

   - a support (10) placed close to a road safety barrier (2), on a side thereof which is opposite at least one carriageway; and

   - an arm (13) mounted above said support and freely pivotable about a vertical axis (12) and a horizontal axis (14) perpendicular to the direction of its length, so as to be able to move from a horizontal position to a vertical or upwardly inclined position by pivoting about said horizontal axis (14);

   and in that the arms (13) of said signalling devices (1, 1A, 1B, 1C, 1D, 1E) are of increasing length in the direction of travel (C) along the said carriageway, so as to form a slanting closure when said arms (13) are arranged in the horizontal position to extend across said carriageway.
2. System according to claim 1, wherein the height of the support (10) in relation to the ground and the shape of the arm (13) of each signalling device (1, 1A, 1B, 1C, 1D, 1E) are selected so that said arm (13) can be arranged in a horizontal position perpendicularly to said road safety barrier (2) and passing above the latter, so as to extend across said carriageway.
3. System according to claim 2, wherein the arm (13) of each signalling device (1, 1A, 1B, 1C, 1D, 1E) carries, along its part (13") which is capable of extending across said carriageway, road signalling means (21, 22) extending downwardly to a level below the height of said road safety barrier (2).
4. System according to one of the preceding claims, wherein the arm (13) of each signalling device (1, 1A, 1B, 1C, 1D, 1E) comprises, close to its distal end, a crutch (23) which, when the arm (13) is in the horizontal position, extends down to the ground to support its weight.
5. System according to one of the preceding claims, wherein the arm (13) of each signalling device (1, 1A, 1B, 1C, 1D, 1E) also comprises:

   - first locking means (17), for preventing the pivoting of said arm (13) about said horizontal axis (14) in a vertical position;

   - second locking means (18, 19, 20) for preventing the pivoting of said arm (13) about said vertical axis (12) in a position parallel to said road safety barrier (2) and in a position perpendicular to said road safety barrier (2), wherein said arm (13) extends across said carriageway.
6. System according to one of the preceding claims, wherein the arm (13) of each signalling device (1, 1A, 1B, 1C, 1D, 1E) comprises a counterweight (16) intended to assist its pivoting about said horizontal axis (14).
7. System according to claim 6, wherein said counterweight is fixed to a lever arm (22) extending in an oblique direction relative to the arm (13) starting from a point on said arm (13) close to its proximal end.
8. System according to claim 6, wherein said arm (13) is mounted so as to pivot about a horizontal pivot (14') fixed between the two arms of a U-shaped yoke (15), said yoke (15) in turn being mounted to pivot about a vertical pivot (12') fixed to said support (10) and wherein said counterweight (16) is positioned inside said U-shaped yoke (15) when said arm (13) is in a vertical or upwardly inclined position.
9. System according to one of claims 1 to 8, wherein the arm (13) of each signalling device (1, 1A, 1B, 1C, 1D, 1E) is mounted on said support (10) by means of a ball and socket joint.
10. System according to one of the preceding claims, comprising actuating means for inducing a pivoting movement of the arm (13) of each signalling device (1, 1A, 1B, 1C, 1D, 1E) about said vertical (12) and horizontal (14) axes.
11. System according to claim 10, comprising control means for remotely controlling said actuating means.
12. System according to one of the preceding claims, wherein each signalling device (1, 1A, 1B, 1C, 1D, 1E) also comprises guide means (30) for guiding the pivoting movements of said arm (13) along a predetermined trajectory.
13. System according to one of claims 2 to 12 wherein at least the part (13") of the arm (13) of each signalling device (1, 1A, 1B, 1C, 1D, 1E) which is capable of extending across said carriageway is made of plastics, so as to break into fragments in the event of impact with a vehicle without endangering the latter.
14. System according to one of the preceding claims, comprising between 3 and 7, preferably 5, signalling devices (1, 1A, 1B, 1C, 1D, 1E).
15. System according to one of the preceding claims, wherein the supports (10) of said devices are placed between two road safety barriers (2, 2') defining the central reservation of a dual carriageway.
16. Method of deploying or retracting a signalling device (1, 1A, 1B, 1C, 1D, 1E) of a system of beacons according to one of claims 1 to 15, comprising operations of pivoting the arm of said device about said horizontal (12) and vertical (14) axes in order to bring it from a horizontal resting position, parallel to said safety barrier (2) and on a side thereof which is opposite at least one carriageway, to a horizontal operating position perpendicular to said road safety barrier (2) and extending across said carriageway, or vice versa, by passing above said safety barrier (2).
17. Method of deploying or retracting a system of markers according to one of claims 1 to 15, comprising the deployment or retraction of each device (1, 1A, 1B, 1C, 1D, 1E) according to the method in claim 16, starting with the device located furthest upstream (1A) in the direction of travel (C) along said carriageway towards the device situated the furthest downstream (1E) for the deployment and starting from the device situated the furthest downstream (1E) in the direction of travel (C) along said carriageway towards the device situated the furthest upstream (1A) for the retraction.

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