When.com Web Search

  1. Ads

    related to: driving distance time calculator usa

Search results

  1. Results From The WOW.Com Content Network
  2. Two-second rule - Wikipedia

    en.wikipedia.org/wiki/Two-second_rule

    The three second rule is a time for the defensive driver to judge the minimum safe trailing distance to help avoid collisions under ideal driving conditions. The red car's driver picks a tree to judge a two-second safety buffer. The two-second rule is a rule of thumb by which a driver may maintain a safe trailing distance at any speed.

  3. Headway - Wikipedia

    en.wikipedia.org/wiki/Headway

    Headway is the distance or duration between vehicles in a transit system. The minimum headway is the shortest such distance or time achievable by a system without a reduction in the speed of vehicles. The precise definition varies depending on the application, but it is most commonly measured as the distance from the tip (front end) of one ...

  4. Assured clear distance ahead - Wikipedia

    en.wikipedia.org/wiki/Assured_Clear_Distance_Ahead

    The distance "d i" is the sum of the measured limit line setback distance—which is typically regulated by a Manual on Uniform Traffic Control Devices, at often between 4 and 30 feet in the United States [134] [135] [136] —and the crosswalk, parking lane, and road shoulder width.

  5. Speed limits in the United States - Wikipedia

    en.wikipedia.org/wiki/Speed_limits_in_the_United...

    Map of highest posted speed limits in US states or counties Map of highest posted speed limits in the U.S. territories. In the United States, speed limits are set by each state or territory. States have also allowed counties and municipalities to enact typically lower limits. Highway speed limits can range from an urban low of 25 mph (40 km/h ...

  6. VASCAR - Wikipedia

    en.wikipedia.org/wiki/VASCAR

    A VASCAR unit uses a stopwatch and a simple computer. An operator records the moments that a vehicle passes two fixed objects (such as a white circle or square painted on the road) that are a known distance apart. The vehicle's average speed is then calculated by dividing the distance between the points by the time taken to travel between them.

  7. Left- and right-hand traffic - Wikipedia

    en.wikipedia.org/wiki/Left-_and_right-hand_traffic

    This is an accepted version of this page This is the latest accepted revision, reviewed on 20 December 2024. Directionality of traffic flow by jurisdiction Countries by direction of road traffic, c. 2020 ⇅ Left-hand traffic ⇵ Right-hand traffic No data Left-hand traffic (LHT) and right-hand traffic (RHT) are the practices, in bidirectional traffic, of keeping to the left side and to the ...

  1. Ad

    related to: driving distance time calculator usa