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the sirens tell people that a car is coming also it sends a signal to stoplights for a go.

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Q: What do sirens on ambulances and police cars do?
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Related questions

How do police sirens work?

Police cars have sirens.

Why do police cars have sirens?

To warn other cars it is coming through!

Did police cars in 1933 have lights and sirens?


What does the company Code 3 do?

The company Code 3 sells emergency lighting and sirens for emergency vehicles like police cars, fire engines and ambulances. They also provide lighting for utility trucks who do roadside work.

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Emergency vehicles such as police cars, fire trucks, and ambulances only.

How does the Miami Police dept compare with the French Police?

The french police drive terrible cars with terrible sirens were as the Miami police department drive good cars with good sirens, also they have a better way of processing people and information in the Miami police department. Also, the Miami police probably need better training, because Miami is the most crime-filled state in the US.

What are the release dates for Great Cars - 2003 Ambulances?

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Did 1940's British police cars have sirens?

Looking at pictures of these Police cars it does not look like they had sirensAdded: I believe that they used alarm bells or "military horns" (alternating high-low pitch)

When sirens used on US police cars?

Policies and laws vary from state to state, but in my locality, police officers basically use sirens (and lights) any time they are responding to an emergency call. If they are responding to a silent alarm, they may choose to not use sirens, but that's not common around here.

What do sirens on a police car do?

Sirens on a police car either makes "Noise" or "Wails".

Is there a law that states that the emergency services can not sound their siren after a certain time of day-night?

No. In most states their are laws that list the Db levels, and how high those levels can be at what time of the day. In nearly all of these laws emergency services are exempt, including; police cars; fire trucks; ambulances; fire alarms; tornado sirens; and other emergency service's that are noisy.