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  2. Braking distance - Wikipedia

    en.wikipedia.org/wiki/Braking_distance

    Braking distance refers to the distance a vehicle will travel from the point when its brakes are fully applied to when it comes to a complete stop. It is primarily affected by the original speed of the vehicle and the coefficient of friction between the tires and the road surface, [Note 1] and negligibly by the tires' rolling resistance and vehicle's air drag.

  3. Isochrone map - Wikipedia

    en.wikipedia.org/wiki/Isochrone_map

    Geoapify Isochrone API – API service to build isochrones for drive, truck, bicycle, walk and transit modes. Worldwide. [32] GraphHopper [33] can be used to calculate a detailed time information for every point within a certain time or distance reach. GRASS v.net.iso module [34] instaGIS [35]

  4. Stopping sight distance - Wikipedia

    en.wikipedia.org/wiki/Stopping_sight_distance

    A generous amount of time is given for the perception-reaction process, and a fairly low rate of deceleration is used. The design sight distance allows a below-average driver to stop in time to avoid a collision in most cases. Driver perception/reaction distance is calculated by: d PRT = 0.278 Vt (metric) d PRT = 1.47 Vt (US customary) Where:

  5. 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 ...

  6. 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.

  7. Gear inches - Wikipedia

    en.wikipedia.org/wiki/Gear_inches

    Gear inches is an imperial measure corresponding to the diameter in inches of the drive wheel of a penny-farthing bicycle with equivalent (direct-drive) gearing. A commonly used metric alternative is known as metres of development or rollout distance, which specifies how many metres a bicycle travels per revolution of the crank.