Tractor trailers

Construction 5 Working as a long-haul truck driver is a major lifestyle choice because these drivers can be away from home for days or weeks at a time.

Tractor trailers

North America[ edit ] Tractor unit hauling tractor units in Idaho In North Americathe combination vehicles made up of a powered truck and one or more semitrailers Tractor trailers known as "semis", "semitrailers", [1] "tractor-trailers", "big rigs", "semi trucks", "eighteen-wheelers", or "semi-tractor trailers".

The tractor unit typically has two or three axles ; those built for hauling heavy-duty commercial-construction machinery may have as many as five, some often being lift axles. The most common tractor-cab layout has a forward Tractor trailers, one steering axle, and two drive axles.

The fifth-wheel trailer coupling on most tractor trucks is movable fore and aft, to allow adjustment in the weight distribution over its rear axle s.

Ubiquitous in Europe, but less common in North America since the s, is the cabover engine configuration, where the driver sits next to, or over the engine. With changes in the US to the maximum length of the combined vehicle, the cabover was largely phased out of North American over-the-road long-haul service by Cabovers were difficult to service; for a long time the cab could not be lifted on its hinges to a full degree forward tilt, severely limiting access to the front part of the engine.

In the US it is common to refer to the number of wheel hubs, rather than the number of tires; an axle can have either single or dual tires with no legal difference. Many trailers are equipped with movable tandem axles to allow adjusting the weight distribution.

To connect the second of a set of doubles to the first trailer, and to support the front half of the second trailer, a converter gear known as a "dolly" is used. This has one or two axles, a fifth-wheel coupling for the rear trailer, and a tongue with a ring-hitch coupling for the forward trailer.

Individual states may further allow longer vehicles, known as "longer combination vehicles" or LCVsand may allow them to operate on roads other than Interstates.

Doubles officially " STAA doubles ", known colloquially as "a set of joints": Future long combination vehicles under consideration and study for the U. MAP transportation bill are container doubles. These combinations are under study for potential recommendation in November The US federal government, which only regulates the Interstate Highway Systemdoes not set maximum length requirements except on auto and boat transportersonly minimums.

Tractors can pull two or three trailers if the combination is legal in that state. There is a maximum width of 8. Reasons for limiting the legal trailer configurations include both safety concerns and the impracticality of designing and constructing roads that can accommodate the larger wheelbase of these vehicles and the larger minimum turning radii associated with them.

In general, these configurations are restricted to the Interstates. Except for these units, double setups are not restricted to certain roads any more than a single setup. They are also not restricted by weather conditions or "difficulty of operation".Huge supply of semi tractor trailers for sale across the USA listed by trailer dealers, truckers, and owner operators.

Find all types and makes of trailers for sale. Your source for real life replicas of cars, trucks, planes, buses, and more! TSC carries utility trailers. The web browser you are using is out of date and no longer supported by this site. Heavy and tractor-trailer truck drivers transport goods from one location to another.

Most tractor-trailer drivers are long-haul drivers and operate trucks with a gross vehicle weight (GVW) capacity—that is, the combined weight of the vehicle, passengers, and cargo—exceeding 26, pounds.

Tractor trailers

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We carry top of the line tractors, trailers, and outdoor power equipment from the top manufacturers in the industry. Welcome to JC Tractor Repair & Restoration. Currently we are a tractor repair and restoration business.

We also sell the following equipment: Big Tex Trailers, CM Truck Beds, Branson and Zetor Tractors, Intimidator UTV's, Spartan, Big Dog and Grasshopper Zero-Turn mowers, and Hud-Son Forest Equipment, as well as numerous implements and accessories.

Semi-trailer truck - Wikipedia