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2. Semi-trailer truck - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer_truck

   A cab over semi-tractor. Tractor with an end-dump trailer. A FAW semi-trailer truck in China. A semi-trailer truck[1] (also known by a wide variety of other terms - see below) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called a fifth wheel.

3. Tire-pressure monitoring system - Wikipedia

   en.wikipedia.org/wiki/Tire-pressure_monitoring...

   A tire-pressure monitoring system (TPMS) monitors the air pressure inside the pneumatic tires on vehicles. [1] A TPMS reports real-time tire-pressure information to the driver, using either a gauge, a pictogram display, or a simple low-pressure warning light. TPMS can be divided into two different types – direct (dTPMS) and indirect (iTPMS).

4. Ground pressure - Wikipedia

   en.wikipedia.org/wiki/Ground_pressure

   Ground pressure is the pressure exerted on the ground by the tires or tracks of a motorized vehicle, and is one measure of its potential mobility, [1] especially over soft ground. It also applies to the feet of a walking person or machine. Pressure is measured in the SI unit of pascals (Pa). Average ground pressure can be calculated using the ...

5. Federal Bridge Gross Weight Formula - Wikipedia

   en.wikipedia.org/wiki/Federal_Bridge_Gross...

   A tandem axle is defined as two or more consecutive axles whose centers are spaced more than 40 inches (102 cm) but not more than 96 inches (244 cm) apart. [10] Axles spaced less than 40 inches (102 cm) apart are considered a single axle. [11] In effect, the formula reduces the legal weight limit for shorter trucks with fewer axles (see table below

6. Glossary of the American trucking industry - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_the_American...

   An articulated (jointed) combination vehicle, often composed of a 10-wheeled (three axle) tractor and a 4-wheeled (two axle) trailer. There are also two axle tractors, single axle trailers, and occasionally combinations with extra lift axles. In some applications a semi can pull additional full trailers (doubles and triples) with the use of a ...

7. Oshkosh M1070 - Wikipedia

   en.wikipedia.org/wiki/Oshkosh_M1070

   By July 2009 more than 2,600 M1000 trailers had been ordered. [4] The M1000 has 40 wheels (215/75R 17.5 tires) across five axle lines, these with two half-width axles per line. Each axle has hydraulic pendular suspension, providing a 254 mm stroke, with lateral oscillation accommodating surface undulations.