Signal heads are devices which communicate movements, and control the flow of vehicles with traffic signals. BS EN 12368 discusses the performances, and testing procedures of signal heads. BS EN 12368 applies to signal heads with one or more signal lights of the colours red, yellow, and/or green signal lights for road traffic with 200 mm, and 300 mm roundels, and optical units, to be integrated into signal heads to produce the individual signal lights.
BS EN 12368 defines the product characteristics for the visual, structural, environmental performances, and testing of signal heads, and optical units for pedestrian, and road traffic use.
BS EN 12368 on traffic control equipment, signal heads, is useful for:
Signal heads are used to transfer safety messages to the road user to achieve specific reactions. Signal heads in road traffic transfer this information optically by signal lights that have a specific meaning, and which differ in their colour of light, and in the design of their illuminating surface.
BS EN 12368 ensures that product failure is prevented thus minimizing the risk of accidents for road users. BS EN 12368 specifies requirements, characteristics for the visual, structural, environmental performances, and testing of signal heads, which will make easier development, design, testing, installation, and maintenance process.
In this regard, BS EN 12368 provides methods, and criteria to assess the performance of traffic signal equipment under typical roadside conditions.
BS EN 12368:2015 supersedes BS EN 12368:2006 which is withdrawn. BS EN 12368:2015 includes some technical changes with respect to BS EN 12368:2006. These include:
EN 12368:2015