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Radio Too Loud? These Sirens You Can Feel

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The Associated Press

Published: November 13, 2008

TULSA, Okla. - You're in the car and you've got the radio cranked up insanely loud. Chances are, you're not going to hear that ambulance siren wailing behind you.

Soon, even if you can't hear it, you'll be able to feel when an emergency vehicle is coming.

Oklahoma's largest ambulance company will become the first ambulance service in the nation to outfit its entire fleet with new Howler sirens, designed to emit low-frequency tones that penetrate objects within 200 feet - such as cars - to alert drivers.

The Emergency Medical Services Authority has equipped one ambulance with the new siren and plans to have them installed on all 77 units in Oklahoma within six months.

Officials say the sirens are ideal for cutting through a sea of traffic, and give emergency responders another tool to let drivers know an ambulance is heading their way.

"The most frequent thing motorists say to us is they didn't see the ambulance coming," EMSA spokeswoman Tina Wells said.

During a demonstration, two ambulances were parked near each other. A plastic stepladder with three glasses of liquid on top was placed in between the vehicles.

The ambulance without the Howler sounded its siren and produced its familiar wail. Then, the Howler, which produced booms that sounded like a 1980s video game played at an earsplitting level. The liquids in the three glasses rippled. Wells jokingly said the new sirens sounded like "a vacuum cleaner on steroids."

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