What are they?
Commonly called flashers or flashing lights, these are a type of traffic control signal that continually flashes amber or red at intersections or in advance of a location which would require the driver to take greater care due to unusual conditions.
They serve to alert drivers of such things as a physical obstruction in the roadway, sharp curves or hidden intersections and are used when regulatory or cautionary signs are insufficient. When properly located they serve a useful function.
Where are they installed?
Flashing amber beacons used as a warning for an obstruction are installed on a pole in or on the obstruction. When used as a warning at intersections, the beacons are suspended over the centre of the intersection. Used in conjunction with warning signs, they are located in the most beneficial location dependant on the purpose.
What are the issues?
In some municipalities, they are often installed as a "quick fix" to a perceived traffic problem leaving the underlying problems unaddressed. In most cases, such things as improvements to signage, pavement markings and sight distance help to solve the issue.
Improper usage of flashing beacons greatly reduces the effectiveness of other beacons installed where there is a real need. It is important to limit their usage to locations where there is a demonstrated need, thus maintaining motorists' respect.
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