What's the name of this signal?

[coyoteunknown]

http://www.youtube.com/watch?v=RKnL6NPyD40

Second police car is using a signal I'm unsure of it's name. It's not wail, yelp, high/low, or airhorn.

http://www.youtube.com/watch?v=4rHLp45xo-8&NR=1

Another video, the third signal after "Yelp". What's it called? I like it, hehe.

[JasonC]

Depending on the manufacture, it's called phaser, hyperyelp, or priority. Have you never heard this tone before? Its on basically every siren now and has unfortunately "phased" out hi-lo.

[Shinkansen]

Depending on the manufacture, it's called phaser, hyperyelp, or priority. Have you never heard this tone before? Its on basically every siren now and has unfortunately "phased" out hi-lo.

Lol very funny with the pun Jason.

[coyoteunknown]

Depending on the manufacture, it's called phaser, hyperyelp, or priority. Have you never heard this tone before? Its on basically every siren now and has unfortunately "phased" out hi-lo.

Never heard it before, at least not in Jonesboro. The Jonesboro police only used Wail/Yelp. Thanks.

[Justin]

It hasn't seemed to have phased out the Hi-lo signal back home. But having said that, our police are state-wide so changes like this would be much harder to implement, and we're much used to the Wail/Hi-lo combination usually used. Over there (I might be wrong here): it's up to the county to decide?

[Daniel]

Justin, individual American states have jurisdiction over what sounds are classified as sirens and which are not. Oregon, for example, does not consider hi-lo to be a siren sound, although it is occasionally used on vehicles that have it. California uses hi-lo more frequently. Some states might not be as particular. The siren industry seems to be coming out with new tones almost every year, and state governments aren't usually quick to act on anything except pay raises for themselves.

For an example concerning lights, in California, a vehicle can display blue lights only if it is carrying an armed officer, and police always have both blue and red. In Oregon, blue lights are sometimes used on fire vehicles as well as police (newer cars are often all blue or mostly blue with a little red, as with the Oregon State Police). In New York state, police use red lights, and blue lights are found on garbage trucks, among other places. Then there are green lights, which some states allow for fire command vehicles.

Basically, it's different everywhere you go here.

[Justin]

Thanks Daniel.

Over here, red and blue lights signify an emergency vehicle of either one of the three services: Police, Fire or Ambulance. Our State Emergency Service (SES for short) typically uses orange beacons but the same siren tone set.