Road fences. Purpose and types of road barriers

Roadways are an integral part of the transport highways. Their main function is to designate the trajectory of traffic, as well as mitigate the consequences of an accident and prevent the vehicle from tipping over into the ditch. Increasingly, such fences are used not only on intercity routes, but also on city roads as security fences.

The main types of road barriers

There are 2 main groups of fences:

1. Barrier type constructions (parapets, borders, etc.), which are used to prevent congresses of vehicles from the roadway, overpasses, overpasses, and also to avoid collisions and raids on structures located in the right-of-way. Barrier road barriers can be metal, concrete and plastic.
2. Designs of the perimeter type - metal grids designed to prevent access to the roadway of animals, as well as to regulate the movement of pedestrians.

Metal fencing

Due to its advantages, this type of fencing is most popular. It is a structure that deforms when you hit. The metal profile is fixed on separate steel or wooden racks. When the car hits a part of the energy takes over the shock absorber, located between the column and the profile. Therefore, the main role of fencing is to reduce accidents on the road and reduce the consequences of accidents.

Such structures are easily installed and dismantled. Metal road fences are used not only on transport highways, but also on construction sites, and to protect pedestrian areas.

Manufacture these fences in accordance with the special requirements of GOST. When selecting designs, in addition to their practical purpose, climatic and seismic conditions must be taken into account. In accordance with these factors, special attention is paid to bearing supports.

Concrete Fences

These are non-deformable structures made of concrete or reinforced concrete. In the form of curbs apply fences:

• Height up to 35 cm, which have a rounded smooth edge and serve as a decorative fringing of sidewalks;
• The construction height from 35 to 50 cm with a steep edge, able to hold the vehicle on the roadway.

In addition to them, there is a parapet fence - its height is more than 50 cm. In appearance, this design resembles a solid wall that separates the roadway from the pedestrian paths and prevents the car from leaving the sidewalks. The facade surface of these enclosures, as a rule, is inclined with a rounded upper edge.

Water-supply units

A barrier road guard made of plastic is often found now. Such designs have significant advantages over concrete or metal. In addition to being easy to transport and install, these fences provide the greatest safety in the event of a car accident.

The most common are road blocks water-filled, made of plastic, red and white. When filling them with water through a hole in the top with a stopper, they form quite stable structures that serve to redirect the traffic flow, and also to ensure safety as a reliable fencing for road works. In the lower part of the barrier there is a hole for draining. The plastic used to make water-filled barriers is resistant to sharp temperature changes, withstands frosts down to -40 ° C, does not burn under the sun, it is easy to clean and does not require painting.

The possibility of locating blocks at different angles to each other allows to wall out any sections of the road, including various turns, as well as pits and excavations. On such a fence, you can glue an additional light-reflecting marking. Being a bright visual guide, plastic road fences help to ensure traffic safety.

Other types of fences

For safety reasons, during construction work, it is absolutely necessary to use special road barriers made of plastic or any other materials.

The best option for construction sites are bright plastic grids, which are clearly visible in any weather. They are distinguished by their high strength, lightness and resistance to rot, which allows them to be used for a very long time.

Grid metal ferrules are used for the purpose of regulating the movement of pedestrians and in order to prevent the appearance of animals on the roadway.

Instead of a grid sometimes apply a protective tape with alternation of red and white color. Road irregularities, pits or any obstacles can be prevented by soft cone-shaped road fences, signal garlands or mobile fences with a logo.