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  2. Roadrailer - Wikipedia

    en.wikipedia.org/wiki/Roadrailer

    Roadrailer. RoadRailers were a trailer or semi-trailer that could be hauled on roads by a tractor unit and then by way of a fifth wheel coupling, operate in a unit train on railway lines. The RoadRailer system allowed trailers to be pulled by locomotives without the use of flatcars, instead attaching trailers directly to bogies.

  3. Road–rail vehicle - Wikipedia

    en.wikipedia.org/wiki/Road–rail_vehicle

    Road–rail excavator British jeep in France, 1945. A road–rail vehicle or a rail–road vehicle is a dual-mode vehicle which can operate both on rail tracks and roads. [1] [2] They are also known as two-way vehicles (‹See Tfd› German: Zweiwegefahrzeug), [3] hi-rail (from highway and railway, or variations such as high-rail, HiRail, Hy-rail [failed verification]), [4] and rail and road ...

  4. Old Dominion Freight Line - Wikipedia

    en.wikipedia.org/wiki/Old_Dominion_Freight_Line

    Old Dominion Freight Line, Inc. traces its origins to 1934 when husband and wife Earl Congdon Sr. and Lillian Congdon (née Herbert) founded the company with a single straight truck running between Richmond and Norfolk, Virginia. [7][8] The name is a reference to a common nickname for the Commonwealth of Virginia, the "Old Dominion." [9]

  5. Runaway truck ramp - Wikipedia

    en.wikipedia.org/wiki/Runaway_truck_ramp

    Runaway truck ramp. A runaway truck ramp, runaway truck lane, escape lane, safety ramp, emergency escape ramp, or truck arrester bed is a traffic device that enables vehicles which are having braking problems to stop safely. It is typically a long, sand - or gravel -filled lane connected to a steep downhill grade section of a main road, and is ...

  6. Trucking industry in the United States - Wikipedia

    en.wikipedia.org/wiki/Trucking_industry_in_the...

    A common property-carrying commercial vehicle in the United States is the tractor-trailer, also known as an "18-wheeler" or "semi". The trucking industry serves the American economy by transporting large quantities of raw materials, works in process, and finished goods over land—typically from manufacturing plants to retail distribution centers.

  7. Tractor-trailers with no one aboard? The future is near for ...

    www.aol.com/news/tractor-trailers-no-one-aboard...

    PITTSBURGH (AP) — On a three-lane test track along the Monongahela River, an 18-wheel tractor-trailer rounded a curve. No one was on board. A quarter-mile ahead, the truck's sensors spotted a ...