SE466271B - TRAFFIC DIFFICULTIES Diminish the Speed of Vehicles - Google Patents

Description

466 271 z limited resources to be able to have a continuous traffic monitoring at each road section of the type in question. For example, in residential areas, elevations have therefore been "built in" permanently in the road and clearly marked where these are located. A driver is therefore forced to slow down when he passes the elevation, so as not to risk damaging his vehicle.

In the case of road works, for example, such a permanent "incorporation" of an elevation into the roadway is, for natural reasons, not an appropriate measure, since the work on the road is limited to an often relatively short period of time. Nevertheless, in this case it is particularly important that the traffic passes the road work at a very leisurely pace, taking into account that workers are operating very close to passing vehicles, often for the sake of their work without the opportunity to pay attention to the traffic.

Through the invention, a well-functioning complement has been added to signage about strong speed limitation and information boards that caution should be observed. This complement consists of a traffic obstruction, which is characterized in the manner set out in the following requirements.

This traffic obstruction is so adapted in size that the driver of a vehicle passing over the obstacle at too high a speed, through a blow to the vehicle and a loud noise, must be made aware of his excessive speed and realize that he must immediately slow down.

In the following, the invention will be described in more detail with reference to the accompanying drawings, in which Fig. 1 shows in perspective a section of a roadway with a laid out traffic obstruction according to the invention, Fig. 2 shows a cross section through a project included in the traffic obstruction file body, Fig. 3 shows a section along the line III-III in Fig. 2 on a larger scale and Fig. 4 shows a broken plan view of a part of the traffic obstruction.

The traffic barrier is made up of a number of profile bodies 1, which are linked to each other. Each profile body 1 consists of a curved plate 2, which is fastened between two elongate feet 3 and 4, which suitably have grooves 5 and 5, respectively. 6 on its underside and consists of a material with a large coefficient of friction against a surface, such as a paved road 7. The profile body 1 has on both sides a gable 8 and can, as 4e6'271'å in the embodiment shown, be provided with an intermediate the feet 3, 4 extending bottom plate 9. In the profile bodies 1 are connected to each other with chain links 10, which are screwed to the ends 8 by means of threaded pins 11 and nuts 12.

A length of such interconnected profile bodies 1 is laid out on a roadway 7 in its transverse direction in the manner shown in Fig. 1 just before, for example, a road work. It can be assumed that the direction of travel on the roadway 7 goes from left to right in Fig. 1. When a vehicle reaches the traffic obstruction, it first rolls up with the front wheels over the rear feet 4 of a pair of profile bodies 1 and presses the profile bodies 1 with a part of the vehicle weight against the roadway 7. When the wheels reach over the crest of the curved plate 2, which forms a hump, the wheels release their abutment against the plate 2 and thump down a bit further towards the front edge of the profile body 1 or towards the roadway 7 depending on how the vehicle travels quickly. A shock and a loud banging sound in the vehicle immediately make the driver aware that any higher speed on this stretch of road is not advisable. The process is repeated the moment later, when the rear wheel of the vehicle passes the obstacle.

Several traffic obstructions according to the invention, laid out in parallel at some mutual distance, of course serve even better their purpose of reducing the vehicle speed on the road section concerned.

The traffic obstruction according to the invention constitutes a relatively light construction, which when completed road work by one or a couple of people can easily be lifted away and transported to the next stretch of road, where a new work is to be started. Due to its constructive design with a large abutment surface against the road 7 and chain links 10 as interconnecting means, the traffic obstruction is stable in the longitudinal direction of the road at the same time as it adapts well to irregularities in the transverse direction of the road.

However, the traffic obstruction is not limited to the design shown and described, but can be varied in several ways within the framework of the following requirements. This applies to the design of the profile bodies 1 as well as their feet 3, 4 and the links 10.

Claims (2)

466 271 10 15 20 25 30 35 P A T E N T K R A V Traffic obstruction to reduce the speed of vehicles passing the obstacle, consisting of a number of profile bodies (1), which are arranged to be laid out on a roadway (7) in its transverse direction, in which position each profile body (1) forms a hump with a maximum height at its central part and with gradually decreasing height in the longitudinal direction of the roadway (7) forwards and backwards, it may be known that each profile body (1) consists of one between one in the roadway (7) longitudinal direction of front foot (3) and a rear foot (4) attached upwardly curved plate (2) and that the profile bodies (1) are hingedly connected to each other in the vertical direction by means of extending links (10) between adjacent profile bodies (1). ). Traffic obstruction according to claim 1, characterized in that the front and rear feet (3, 4) of the profile bodies (1) are provided with grooves (5 and 6, respectively) on their underside and consist of a material with a large coefficient of friction.