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  2. Road signs in the United States - Wikipedia

    en.wikipedia.org/wiki/Road_signs_in_the_United...

    One lane bridge. CW5-3 One lane bridge. ... One lane road (distance) ahead. CW20-5R ... Truck lane and slow vehicle signs. D17-1

  3. Single-track road - Wikipedia

    en.wikipedia.org/wiki/Single-track_road

    Usually when there is a brief one-lane bottleneck in a two-lane road, which may happen in many areas, traffic will usually yield to oncoming traffic already in the bottleneck. One-lane single-track roads usually have no conflict. In the United States, if the situation permits, both vehicles will pull off the road slightly and pass in this manner.

  4. Glossary of road transport terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_road_transport...

    See three-way junction 5-1-1 A transportation and traffic information telephone hotline in some regions of the United States and Canada that was initially designated for road weather information. A Access road See frontage road Advisory speed limit A speed recommendation by a governing body. All-way stop or four-way stop An intersection system where traffic approaching it from all directions ...

  5. Interstate Highway standards - Wikipedia

    en.wikipedia.org/wiki/Interstate_Highway_standards

    Through urban areas, at least one routing is to have 16-foot (4.9 m) clearances, but others may have a lesser clearance of 14 feet (4.3 m). Sign supports and pedestrian overpasses must be at least 17 feet (5.2 m) above the road, except on urban routes with lesser clearance, where they should be at least 1 foot (30 cm) higher than other objects.

  6. List of gaps in Interstate Highways - Wikipedia

    en.wikipedia.org/wiki/List_of_gaps_in_Interstate...

    This section addresses two-lane freeways and other narrow or undivided freeway sections of the Interstate, excepting instances of continuing routes using one-lane ramps and merge leads. Narrow gaps between opposing directions with jersey barriers taller than four feet (1.2 m) are excluded from this section; therefore the separation criterion is ...

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  8. Mileage sign - Wikipedia

    en.wikipedia.org/wiki/Mileage_sign

    A mileage sign, sometimes also called a route confirmation sign or simply a distance sign in certain contexts, is a type of road sign along highways that displays the distance from the current point on a highway to a certain city, destination, or a junction to another highway. Their purpose is to inform drivers of the distance to a destination ...

  9. Lane - Wikipedia

    en.wikipedia.org/wiki/Lane

    The passing lane is commonly referred to as the fast lane, and the lane closest to the shoulder the slow lane. Some jurisdictions, particularly on limited-access roads, ban passing-lane driving while not overtaking another vehicle; others merely require slower cars to yield to quicker traffic by shifting to slower lanes, or have no limitations.