Emergency Vehicle Equipment 06
Emergency Vehicle Equipment 06 : Visual Warning Devices: (2) Active Visual Warnings: Types of beacon include: (a) Light bars - A long but narrow 'strip' of lights on top of an emergency vehicle, which can be configured with almost infinite combinations of different lighting technologies from the list below. These are typically the main source of flashing light for the vehicle, and are used on overt marked emergency vehicles. They can also be divided in to sections, with an array of functions (for instance front blue flashing lights, and rear red flashing lights, switched separately). Due to the nature of the wind resistance encountered by these large units, the majority must be fixed to the car permanently, although some units (usually smaller) are available with either magnetic or suction cup mountings which can be removed. The Light bar may also contain the Audible Warning devices. (b) Beacons - A simple lighting device, often found on smaller emergency vehicles, or unmarked cars, (where it is removable) and consists of a clear or transparent coloured casing surrounding a lamp and a revolving mirror. Some beacons consist of one or several lamps that revolve, instead of using a mirror
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