Fire Apparatus USA 28
Fire Apparatus USA 28 : Design and Construction (2) Visual Warnings: (2) Active Visual Warnings: The active visual warnings are usually in the form of flashing coloured lights (also known as "beacons" or "lightbars"). These flash to attract the attention of other road users as the fire appliance approaches, or to provide warning to motorists approaching a stopped appliance in a dangerous position on the road. Common colours for fire warning beacons are blue and red. The beacons can be made to flash. The original method was to place a spinning mirror which moves around a light bulb, called a "rotating beacon". More modern methods include the use of strobe lights, which are usually brighter, and can be programmed to produce specific patterns (such as a left -> right pattern when parked on the left hand side of the road, indicating to other road users that they should move out away from the vehicle). LED flashing lights are becoming more widespread, as they are low profile and consume less energy. See also: Emergency vehicle equipment. 20. 4 Aerial Ladder Operating Position 20. 4. 2 A system that is lighted and marked with labels shall be visible from the operator's position to indicate the elevation, extension, and rated capacities (see sample of boom angle indicato)
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