Height Barrier
Height Barriers are not commonly found on the main road network. However, they are commonly encountered by motorists entering multi storey car parks or even open air car parks where motorhomes and so on are to be discouraged. They are also often installed at council recycling centres to control entry by vans (generally considered to be commercial waste).
As with Lifting Barriers, they are normally painted in red and white stripes, to emphasise their presence, and normally also have a Height Warning sign mounted on them. Most Height Barriers other than in multi storeys are actually movable, allowing access for maintenance purposes. The barriers are normally of fairly lightweight construction to minimise damage should they get hit.
Construction sites
Another form of height barrier, most commonly found on construction sites, is even more basic. It consists essentially of a string of read and white bunting flags between two posts, with some form of audible system normally included, such as a bell. If struck, the bell will ring and the string will either snap, dropping the bunting on the windscreen or pull the poles over, alerting the driver to the problem. They are normally located a lorry-length or more in advance of the obstruction, which is most commonly an electric or telephone overhead cable.
