released August 26, 2019 Facts about 18-Wheelers - Semis - big Rigs - Tractor Trailers By: Sach Oliver, trial Attorney/Managing partner


was recently driving on the federal government one afternoon between little Rock, AR and also Memphis, TN. There werefar more 18-wheelers on the big of roadway than passenger cars and trucks. It made me think about“what carry out I really know about these big-rigs sharing the roadway with me?”


An 18 wheeler’s average lenth varies greatly relying on the form of cab they are driving. --70 – 80 FT--Length of one 18 wheeler’s cab is measured from the center of the behind wheel to the facility of the seer axle.

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STANDARD height – 13’ 6”;WHEELBASE245” – 265”Semi van require40% higher TIME to STOPVS. CARS.Factors in the length of time required to protect against an 18 wheeler include load weight, bobtailing and road conditions.18 Wheeler – turning RADIUS:AVERAGE transforming RADIUS -55 FT.;ROAD width -24 FT. (General U.S. Lane width is 12 ft.).COST:Up to $260,000 OR MORE.Semi trailer: $30,000 - $80,000. Semi truck: $130,000 - $180,000


THE fifth WHEEL:The 5th wheel on one 18 wheeler is a ring plate above the drive tires that couples (hooks together) the trailer to the truck.

KINGPIN:The hefty metal cylindrical pin the is located underneath the front finish of the trailer, is the KINGPIN.The kingpin is the system on the trailer the locks it come a road tractor. It is frequently positioned in between 18” come 48” native the trailer nose. A greased steel grid plate surrounds the kingpin. This grid plate enables the fifth wheel to on slide underneath the trailer. When the tractor is backed into the nose of a trailer, the fifth wheel pivots and slides under the trailer’s network plate. The fifth wheel then locks on come the trailer’s kingpin.

BOBTAILING:When a truck is driving without the trailer attached, it’s called BOBTAILING. In wet weather, bobtailing trucks may be an ext dangerous since the truck handles an extremely differently there is no the trailer attached

GEARS: The most usual amount that gears in one 18 wheeler today:10 FORWARD and2 REVERSE.

Double Clutching and “Floating:A “double-clutch” an approach is offered by 18 wheeler chauffeurs for shifting. Shifting gears in a vehicle witha standard transmission is very different than moving gears in an 18 wheeler.In a car the rpm’s enhance up and in a truck they do not, thus the clutch is depressed and also then depressed again come “match” the gears with the rpm’s. Many 18 wheeler motorists use what they speak to “floating” which does NOT use the clutch at all other than to start and stop. “Floating” is the wanted method. An gained skill the takes some practice to get used to, “Floating” conserves fuel (when done properly) and also saves wear and also tear ~ above the equipment.

TANDEM:Referring to a collection of 2 tires top top a tractor-trailer together tandem is incorrect.These are much more commonly recognized as double wheels, twin tires or “dualies.” castle are offered for safety (redundancy) so if one tire blows the others will continue to hold up until the tires is repaired.A collection of 2 axles, with one axle automatically following the various other is the correct an interpretation of TANDEM. Each axle bears much less weight once distributing the pack over 2 axles. Since there are laws limiting the lot of weight the canbe carried on each axle, distributing the weight over an ext axles permits a greater full amount of weight to be carried.

AXLES: An 18 wheeler has a complete of 5 axles.

DOUBLES (TWINS, twin TRAILERS):Combination that a tractor and also two semi trailers associated in tandem through a converter dolly.

TRIPLE TRAILER 18 WHEELERS:13 western states where roads are flat and also straight, enable triple trailers: Arizona, Colorado, Idaho, Indiana, Kansas, Montana, Nebraska, Nevada, north Dakota, southern Dakota, Oklahoma, Oregon and also Utah. Ohio also allows triple trailer 18 wheelers.

ANTI-LOCK BRAKING solution (ABS):Anti-lock braking equipment are required on tractors the were manufactured on or after March 1, 1997, and also air-braked semi-trailers and single-unit trucks that were produced on or after ~ March 1, 1998.


If you"ve been connected in a wreck through an 18-wheeler, call me - 479-202-5200, or click the CHAT currently at the peak of this page. Bailey & Oliver legislation firm, 3606 W. Southerly Hills Blvd., Ste. 200, Rogers, AR 72758. Situated at leave 81 off Pleasant Grove Road, simply west that I-49.

Sources:, Facts around Trucks – whatever You want to Know about Eighteen Wheelers; Facts about Trucks., American Trucking Associations (ATA), navard of Trucking Terms.

See more: She Helped Theseus Navigate The Labyrinth Crossword Clue, She Helped Theseus Navigate The Labyrinth, The effectiveness of ABS in hefty Truck Tractors and Trailers, NHTSA.