Terminal tractor

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Terminal tractor
Campbells Shunt Truck.JPG
Ottawa 4×2 DOT/EPA[1]
Production history
Manufacturer Kalmar Ottawa
Location Ottawa, Kansas USA
Produced 2014
Variants 4×2 off-road, 6×4 DOT/EPA
Wheelbase 116 in (2.95 m)
Weight 81,000 lb (37,000 kg) GCWR
Engine Cummins ISB6.7 2013
I6 turbocharged Diesel engine[2]
Power 200 hp (149 kW) @2300rpm
520 lbf⋅ft (705 N⋅m) @1600rpm
Transmission Allison 3000RDS
6-speed automatic
Speed 33 mph (53 km/h)
45 mph (72 km/h) w/ABS

A terminal tractor, known in the United States as a shunt truck, spotter truck, spotting tractor, yard truck, yard dog, yard goat, yard horse, yard jockey or mule, is a semi-tractor intended to move semi trailers within a cargo yard, warehouse facility, or intermodal facility, much like a switcher locomotive is used to position railcars.

A terminal tractor moving trailers in Rotterdam, the Netherlands

Distinctions between a terminal tractor and a regular road truck are several and noticeable:

  • A single-person cab offset to the side of the engine.
  • A full-height, sliding rear door for easy access to trailer connections.[3]
  • A very short wheelbase, usually with a solidly mounted rear axle.
  • A low-power diesel or alternative fuel engine, usually with an automatic transmission.
  • A fifth-wheel coupling with an integrated lifting mechanism allows the semi-trailer's legs to remain in the lowered position during movement. 15 inches (380 mm) and 70,000 lb (32,000 kg) of hydraulic lift is typical.
  • 12-gauge steel side wall cab construction with 12-inch (13 mm) steel floors for protection in abusive and dangerous work environments.[4]
  • 360-degree view to facilitate five to six moves an hour.

Since off-road versions do not have to drive on roads at highway speeds, a typical top speed is just 25 miles per hour (40 km/h). It is rare for these vehicles to be on highways, so it was very unusual when a pedestrian was accidentally struck and dragged by a yard truck at an intersection in Bellevue, Washington, in February 2014.[5]

Autocar, Capacity Truck, Hoist Liftruck[6], Tico, and Kalmar Ottawa terminal tractors are manufactured in North America. Orange EV manufactures pure-electric terminal tractors in Missouri.[7] Effenco manufactures hybrid systems that can be retrofitted on yard tractors. One of many European manufacturers is Dutch company Terberg who now has distribution in Florida.


  1. ^ "Kalmar Ottawa Home Page". Kalmar Ottawa. 2014. Retrieved 14 April 2015.
  2. ^ "ISB6.7 for Medium-Duty Trucks (2013)". Cummins, Inc. 2015. Retrieved 14 April 2015.
  3. ^ http://www.autocartruck.com/terminal-tractor
  4. ^ "Capacity Texas" (PDF). capacitytexas.com.
  5. ^ Woman struck and killed by yard truck in Bellevue By KOMO Staff Published: Feb 24, 2014
  6. ^ http://www.hoistlift.com/hoist-t-series/
  7. ^ "Quick Spin: Orange EV's All-Electric Terminal Tractor". Heavy Duty Trucking Info. Retrieved 4 May 2017.

See also[edit]

External links[edit]