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  2. Interstate Highway standards - Wikipedia

    en.wikipedia.org/wiki/Interstate_Highway_standards

    Minimum lane width: The minimum lane width is 12 feet (3.7 m), identical to most US and state highways. Shoulder width: The minimum width of the left paved shoulder is 4 feet (1.2 m), and of the right paved shoulder 10 feet (3.0 m). With three or more lanes in each direction, both shoulders are to be at least 10 feet (3.0 m) wide.

  3. Vehicle size class - Wikipedia

    en.wikipedia.org/wiki/Vehicle_size_class

    The current regulations state that a kei car is a vehicle less than 3.4 m (11.2 ft) long, 1.48 m (4.9 ft) wide, 2 m (6.6 ft) high, with a maximum engine displacement of 660 cc (40 cu in) and maximum power of 64 PS (47 kW; 63 hp).

  4. Lane - Wikipedia

    en.wikipedia.org/wiki/Lane

    The lane width depends on the assumed maximum vehicle width, with an additional space to allow for lateral motion of the vehicle. [citation needed] In the United States, the maximum truck width had been 8 ft (2.4 m) in the Code of Federal Regulations of 1956, which exactly matched then standard shipping container width.

  5. 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.

  6. Traffic law in the United States - Wikipedia

    en.wikipedia.org/wiki/Traffic_law_in_the_United...

    Speed limits are set by each state or territory, as well as counties or municipalities, on the roads within their jurisdiction. The maximum speed limit on rural two-lane roads ranges from 50 mph (80 km/h) in parts of the northeast to 75 mph (120 km/h) in parts of Texas.

  7. Truck classification - Wikipedia

    en.wikipedia.org/wiki/Truck_classification

    In the United States, commercial truck classification is determined based on the vehicle's gross vehicle weight rating (GVWR). The classes are numbered 1 through 8. [ 2 ] [ 3 ] Trucks are also classified more broadly by the Federal Highway Administration (FHWA), which groups classes 1 and 2 as light duty , 3 through 6 as medium duty , and 7 and ...

  8. National Network - Wikipedia

    en.wikipedia.org/wiki/National_Network

    §658.9 National Network Criteria [2] The National Network listed in the appendix to this part is available for use by commercial motor vehicles of the dimensions and configurations described in §658.13 and §658.15. For those States with detailed lists of individual routes in the appendix, the routes have been designated on the basis of their ...

  9. Clearance (civil engineering) - Wikipedia

    en.wikipedia.org/wiki/Clearance_(civil_engineering)

    In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a lock or diameter of a tunnel in the case of watercraft.