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  2. Oversize load - Wikipedia

    en.wikipedia.org/wiki/Oversize_load

    In the United States, an oversize load is a vehicle and/or load that is wider than 8 ft 6 in (2.59 m). Each individual state has different requirements regarding height and length (most states are 13 ft 6 in or 4.11 m tall), and a driver must purchase a permit for each state he/she will be traveling through.

  3. Loading gauge - Wikipedia

    en.wikipedia.org/wiki/Loading_gauge

    PPI – the predecessor of the UIC gauges had the maximum dimensions 3.15 by 4.28 m (10 ft 4 in by 14 ft 1 in) with an almost round roof top. UIC A: The smallest (slightly larger than PPI gauge). [5] Maximum dimensions 3.15 by 4.32 m (10 ft 4 in by 14 ft 2 in). [6] UIC B: Sligtly larger than the UIC on the roff level. [5]

  4. American Association of State Highway and Transportation ...

    en.wikipedia.org/wiki/American_Association_of...

    The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United States. Despite its name, the association represents not only highways but air, rail, water, and public ...

  5. Interstate Highway standards - Wikipedia

    en.wikipedia.org/wiki/Interstate_Highway_standards

    Maximum grade: The maximum permissible vertical angle, or grade, along the highway is determined from terrain and design speed, [4] with up to 6% generally allowed in mountainous areas, 5% in rolling terrain, and 4% on level terrain. An additional 1% is allowed in urban areas.

  6. Geography of the United States - Wikipedia

    en.wikipedia.org/wiki/Geography_of_the_United_States

    The United States shares land borders with Canada and Mexico and maritime borders with Russia, Cuba, the Bahamas, and many other countries, mainly in the Caribbean [note 2] in addition to Canada and Mexico. The northern border of the United States with Canada is the world's longest bi-national land border.

  7. Semi-trailer truck - Wikipedia

    en.wikipedia.org/wiki/Semi-trailer_truck

    Conventional style cab tractor A cab-over semi-tractor Tractor with an end-dump trailer A FAW semi-trailer truck in China A semi-trailer truck (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. Other terms There are a ...

  8. Federal Bridge Gross Weight Formula - Wikipedia

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

    Provided the truck remains on the NN, in all States and a truck is not subject to State size limits. [8] In a similar fashion, the Federal weight limits and the Federal Bridge Formula apply to the Interstate System in all States. The State truck size and weight regulations apply to the Federal Aid System routes that do not have Federal limits.

  9. Track gauge in the United States - Wikipedia

    en.wikipedia.org/wiki/Track_gauge_in_the_United...

    Problems began as soon as lines began to meet, and standard gauge was adopted in much of the northeastern U.S. Standard gauge had spread widely across the country by the late 19th century except in some parts of the South; it was adopted there in a two-day changeover on May 31-June 1, 1886.