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This Q2B or "Q-siren" is mounted on a Pierce Platform Aerial Fire Truck owned by the City of Bellingham, WA. The Q2B siren ("Q-siren") [1] is an electromechanical siren that is produced by the Federal Signal Corporation and is most recognizable for its sound, which is trademarked, and the look of the siren.
The Whelen siren's wail, yelp and phaser tones are a familiar sound in many cities. When an emergency vehicle is responding, it often uses audio warning devices in addition to the visual warnings provided by its warning lights. Audio warning devices are turned off once the vehicle is on-scene. Such devices include:
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.).
The Los Angeles Police Department (LAPD), the primary law enforcement agency of Los Angeles, California, United States, maintains and uses a variety of resources that allow its officers to effectively perform their duties. The LAPD's organization is complex with the department divided into bureaus and offices that oversee functions and manage ...
In a pneumatic siren, the stator is the part which cuts off and reopens air as rotating blades of a chopper move past the port holes of the stator, generating sound. The pitch of the siren's sound is a function of the speed of the rotor and the number of holes in the stator. A siren with only one row of ports is called a single tone siren.
The Los Angeles Police Department’s rank-and-file union is proposing that someone other than police respond to more than two dozen types of 911 calls in a bid to transfer officers' workload to ...
The Los Angeles County Office of Public Safety (LACOPS), less formally known as the Los Angeles County Police, was a security police agency for the County of Los Angeles.It was formed in 1998 by consolidating three Los Angeles County law enforcement agencies: the Department of Parks and Recreation Park Police, which was formed in 1969 as Los Angeles County Park Patrol, and the Department of ...
The Orange County Sheriff's Office said on social media that there was no active shooter at the park and that a fight broke out and a "popping" sound was heard that police believe was a balloon.