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A tow truck (also called a '''wrecker''', a '''breakdown truck''' or a '''breakdown lorry'''), is a vehicle used to take disabled Motor Vehicle s to another location (generally a repair Garage ) in case of Breakdown or Collision , or to impound illegally parked vehicles on public or (more commonly) private property.

It is generally provided by an Emergency Road Service operator.


TYPES OF TOW TRUCKS


Five general types are in common usage, usually based on the type or size of vehicle to be towed Truck Chassis :

  • Boom - not specifically for towing, many trucks are equipped with an adjustable boom winch for recovering vehicles that are in a Ditch , Culvert , over an Embankment , or any place the vehicle cannot be safely backed-up to.

  • Hook and Chain (also known as a "sling" or "belt lift") - chains are looped around the vehicle frame or axle, which is drawn aloft by a boom winch to rest against a pair of heavy rubberized mats so the customer's vehicle can be towed on its other axle. Slings are not used much today because they can scratch the bumpers of cars. But they are sometimes used for towing vehicles that have been in an accident or have one or two of the front or rear wheels missing or for pickup trucks and other vehicles that have steel bumpers

  • Wheel-Lift - evolved from the hook and chain technology to produce a large metal yoke that can be fitted under the front or rear wheels to cradle them, drawing the front or rear end of the vehicle clear of the ground by a pneumatic or hydraulic hoist so it can be towed. This apparatus generally picks up the drive wheels of the vehicle (ie the front wheels if it is front wheel drive, the rear wheels if it is rear wheel drive) touching only the tires.

  • Flatbed (also called a Rollback or a Slide) - the entire back of the truck is fitted with a bed that can be hydraulically inclined and moved to ground level, allowing the customer's vehicle to be placed on it under its own power or pulled by a winch.

  • Integrated (also referred to as a Snatcher or Repo Truck) - boom and wheel-lift integrated into one unit. Used predominantly to repossess vehicles or move illegally parked vehicles. Most have controls for the apparatus inside the cab of the tow truck to make quick pickup possible without the inconvenience of exiting the truck to hook up the vehicle.


These are the most common arrangements, but are by no means exclusive, as there are flatbed units that offer a wheel-lift, boom trucks that can recover but not tow, and wheel-lift units that offer a combination boom with sling.


OPERATIONS


Tow trucks are usually operated by private businesses, except for major their own vehicles. Government departments with large fleets (such as the Police Department s, Fire Department s, transportation authorities and departments of public works of major cities) may similarly own tow truck(s). Police department tow trucks may also be used to Impound other vehicles.

In the Australian states of New South Wales, Queensland and Victoria there exists a Tow Truck Act , and tow trucks are identified by number plates ending in "TT".


Dispatching


Requests for service are placed to a Dispatching center. Some tow services communicate with drivers using Wireless Telephone equipment. In others, the dispatching center contacts an available tow truck driver via Mobile Radio or by sending a text message using a Mobile Data Terminal . Recent technology includes the use of GPS and on board wireless equipment to dispatch drivers via a LCD screen receiver.


Impounds and Storage


Many tow companies have the capability to store vehicles that have been wrecked or impounded by police agencies. In these circumstances, police agencies notify a contracted towing provider to secure the vehicle and tow it to a storage lot. The tow company will sometimes prevent access to the vehicle until the law states the owner can claim it (usually after any fines are paid).

Nearly all tow companies charge a fee for storing vehicles.


GPS and AVL


Navigation System s are becoming more commonly used to tell the Location (of Stranded vehicles) to tow trucks. Automatic Vehicle Location (AVL) systems are sometimes used to help the dispatch center staff determine the closest tow truck. AVL may use GPS technology. It may display the location of all tow trucks on a map or may feed data directly to a Computer-assisted Dispatch system which automatically recommends the closest available units.


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