A car alarm is an audible alarm sounding system that is meant to protect your vehicle from theft and vandalism. Often very high-pitched and loud, the point of your car alarm is to alert you quickly to the possibility of something negative happening to your vehicle. When a car alarm system is activated the headlights and taillights of your vehicle flash on and off along with the siren like noise.
Typically to trigger a car alarm you have to do the vehicle physical harm although there are a many car alarm systems in the automotive world today that are extremely sensitive, some even trigger when a person is too close. Aside from physical harm, loud noises such as stereo systems and even aftermarket car/motorcycle exhaust can easily trigger a cars alarm. Car alarms vary in tone, pitch, and the length of time they continue before shutting off. In short a car alarm is meant to scare away a car thief or anyone that is attempting to harm your vehicle with the siren like sound and visual stimuli of the headlights and taillights flashing. Car alarms also can indicate a possible hit and run. Since all cars are different it is somewhat easy to tell if the alarm going off belongs to your vehicle or another’s.
Modern car alarms were introduced in the 1970’s-80’s and have been implemented in almost all vehicles worldwide, today it is very unlikely that a car would not have a alarm. Since the majority of car alarms that go off are user error and not vandalism, most cars have a remote control for the car with a red button to turn a car alarm from on to off or from off to on. Although proven to be very beneficial it is reported that in the United States a car is stolen every 26 seconds.