Magazine article Law & Order

AVLs.In Every Car

Magazine article Law & Order

AVLs.In Every Car

Article excerpt

ON THE JOB

In automatic vehicle location (AVL) system is a device that uses GPS technology, cellular communications, and street-level mapping to pinpoint the longitude, latitude, ground speed and course direction of the vehicle. AVL systems include a mobile radio receiver, a GPS receiver, modem and antenna. This system connects with a base radio consisting of a PC computing station and GPS receiver. The GPS uses interactive maps, rather than static maps, which means the users can perform functions like zoom, pan, identify and queries.

The AVL unit transmits GPS location data either in response to a command or on a regularly timed basis. For example, it can be programmed to send a signal every hour when the unit is on, every five minutes when the vehicle is moving and every 30 seconds when the emergency lights are activated.

The police management, fleet management and officer survival benefits of AVL are numerous. With AVL, the nearest patrol unit can be dispatched to the emergency for the fastest response time. The availability of nearby back-up units is immediately available. The officer survival aspects of finding an officer (gunfire, traffic accident) of AVL are profound. Also consider more dynamic uses of AVL, like the exact location of the lead car in a pursuit, without the officer taking his hands off the wheel or eyes off the fleeing vehicle.

How about documenting the exact location when the emergency lights are activated? Changing status when the vehicle speed is above 60 mph, or 120 mph? …

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