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Tow truck & support vehicle operators employing blue flashing lights must install and operate them in tandem with flashing amber lights, blue lights alone may not be used. The flashing blue lights may only be used when stopped. [32] Red and blue: police; and ‘other non-police law enforcement’ [a] in all provinces and territories.
The use of flashing lights and sirens is colloquially known as blues and twos, which refers to the blue lights and the two-tone siren once commonplace (although most sirens now use a range of tones). In the UK, only blue lights are used to denote emergency vehicles (although other colours may be used as sidelights, stop indicators, etc.).
These lights are usually mounted on the roof and incorporated into the standard vehicle system of external lights. Most police vehicles are also fitted with a siren. In addition to blue lights, many traffic and incident response cars are fitted with flashing red lights that are only visible at the rear of the vehicle.
Some jurisdictions use special small blue lights on the back sides of signal heads to indicate red -light state. They are used by police. [33] Other jurisdictions simply drill a small hole in the red signal visor to allow police to see the status of the signal from a wide angle (but not directly opposite the signal).
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Five days later, on Jan. 19, police said they arrested a 22-year-old man, Adolofo Bonilla-Centeno, after he tried to use red, white and blue lights on his vehicle to pull someone over.
These lights are used while responding to attract the attention of other road users and coerce them into yielding for the police car to pass. The colors used by police car lights depend on the jurisdiction, though they are commonly blue and red. Several types of flashing lights are used, such as rotating beacons, halogen lamps, or LED strobes ...
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