Barrier board

With a shut-off an area of ​​a traffic area is delimited, in which road users shall not be permitted. It is important to distinguish between temporary and permanent barrier. Reason for a temporary barrier can be dangerous areas such as jobs, events or accident. The barrier is positioned and traffic law, for example, set up by the police. In order to keep the traffic delay as low as possible, forwarding can be set up.

Permanent barriers are placed where traffic areas permanently should not be attempted or the traffic management is to be influenced. This is the case for example in traffic areas or pedestrian streets. The shut-off devices, however, can quickly degrade, for example, if the access for emergency or rescue personnel should be made possible.

Shut-off devices

For shut-off ( blocking devices also known) are as required various shut-off devices shall be used:

• Absperrzäune
• Barriers
• Cordons
• Trailers
• Absperrbaken
• Diagonal lock

The color scheme is striking and designed to make the road users early attention. Warning lights and warning beacons improve visibility in addition.

In order to use the shut-off devices at a work site, these are set up by means provided for this purpose erection. These include erection foot plates, wrapping posts and ground anchors. The signage is fixed, for example by means of pipe clamps.

Restrictions are also among the barriers. You are at customs borders, state borders, at level crossings, non-public private roads and other traffic routes mounted as a fixed traffic control. A special case of the barrier is the short-term erecting a roadblock by police or other ordering or task forces to urgently to prevent alleged suspects people from proceeding further. In the transition from public to private reason why there are so-called Hubkörpersperren in risk areas, which are sunk into the ground if necessary.

History of development

By the end of the 1990s, mostly wooden or metal Barriers were in use in Germany. Both versions were easy to transport and offered a sufficient level of security. However, there was always the risk of incorrect installation. For example, Barriers were erected with directional arrows, which were directed against the prescribed direction of travel, as well as warning signs in the wrong direction.

Since the late 1990s Absperrzäune were introduced increased. They had no more Richtungsbepfeilung ( such as newer Barriers ). In addition, they also offered more reflective surfaces, thereby better visibility has been achieved in the dark. By extending the barriers with another metal strip just above the ground the Absperrzäune were now blind justice. So far, came occasionally blind road users with their canes under the barriers and then ran into the guardrail or the inadequate locked room. That kind of disabled barriers is mandatory in many countries ( for example, in the UK and the U.S.) for quite some time. With a wire connection of two metal strips was achieved, moreover, that it was difficult for children and animals to pass through the barrier.

2004 Absperrzäune were revised again and now consist of hollow plastic. The color of the plastic is from the shut-off or contractors chosen freely and also allows an individual form by the distinction of Absperranlagen other companies.

Improper shut-off

According to the guidelines only isolating valves are to be used, which are also released as such. It may therefore be used not outdated, modified or home-made systems. This is done for reasons of traffic safety and uniformity. For example, consider at this point the so-called Neptune hook is deprecated and no longer has a release.