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Over the last several years, the number of ambushes on police officers in the US has increased dramatically. One of the vulnerabilities threatening officers’ safety is their prolonged stay in a parking police vehicle when they might be a target for an attack.

Several metro police departments throughout the country are now using a new sensor technology that will alert officers when someone is approaching their squad cars to protect them from being ambushed.

The Surveillance Mode Module technology developed by InterMotive automatically alerts the driver, locks the doors and rolls up the windows if someone or something is behind the vehicle, according to the company’s website. With the push of a dash mounted button, an officer can put their patrol vehicle into “surveillance mode” when parking.

How does the system work? As a person approaches the squad, it activates the backup camera, which automatically shows the officer someone is getting close to the car. Once activated, it sets off an alarm, flashing lights, locks the vehicle doors and rolls the windows.

The technology conforms Ford, Dodge and GM police vehicles.

Another technology in this field of police officers’ security is called Stop Ambush. This audio and visual alert device invented by a police officer has a 360-degree motion sensor that tracks motion within a 25-foot radius. It sits on the roof of the officer’s patrol vehicle, signalling to the officer when someone is coming toward them and what direction they’re coming from, according to StopAmbush website.

Using the computer inside an officer’s vehicle reduces the officer’s line of vision, making them more vulnerable.

“The device uses red arrows and beeping sounds to grab the officer’s attention. You could have six people approaching you from six different directions, and you will have six arrows showing you,” said the inventor to policeone.com.