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  2. Stop and yield lines - Wikipedia

    en.wikipedia.org/wiki/Stop_and_yield_lines

    Stop line in Toyokawa, Aichi, Japan Give Way lines in the UK "Shark's teeth" yield lines (white isosceles triangles) as used in the US and many European countries. Stop and yield lines [1] are transverse road surface markings that inform drivers where they should stop or yield when approaching an intersection.

  3. Crosswalks in North America - Wikipedia

    en.wikipedia.org/wiki/Crosswalks_in_North_America

    The stop line acts as the legally mandated stopping point for vehicles, and discourages drivers from stopping in the middle of the crosswalk. [4] The other method involves the use of the more easily visible "continental stripes" (like the UK's zebra crossings), which are sets of multiple bars across the crosswalk itself that are perpendicular ...

  4. Optimal stopping - Wikipedia

    en.wikipedia.org/wiki/Optimal_stopping

    Optimal stopping problems can be found in areas of statistics, economics, and mathematical finance (related to the pricing of American options). A key example of an optimal stopping problem is the secretary problem.

  5. Pedestrian crossing - Wikipedia

    en.wikipedia.org/wiki/Pedestrian_crossing

    Notes Informal crossings Crossings giving equal priority to pedestrian and vehicular traffic. A refuge is sometimes installed so that a pedestrian can cross in two stages; called 'unmarked crosswalk' in North America. Zebra crossing Formed of black and white stripes (resembling a Zebra). Pedestrians normally have priority over vehicular traffic.

  6. Stopping sight distance - Wikipedia

    en.wikipedia.org/wiki/Stopping_sight_distance

    Stopping sight distance is one of several types of sight distance used in road design. It is a near worst-case distance a vehicle driver needs to be able to see in order to have room to stop before colliding with something in the roadway, such as a pedestrian in a crosswalk, a stopped vehicle, or road debris .

  7. Frequency selective surface - Wikipedia

    en.wikipedia.org/wiki/Frequency_selective_surface

    The FSS sheet may be represented in terms of lumped RLC networks placed in parallel across the transmission line. The shunt admittance FSS model is exact only for an infinitesimally thin FSS, for which the tangential electric field is continuous across the FSS; for finite thickness FSS, a tee or pi network can be used as a better approximation.

  8. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    The smallest i such that a i < a 0 is called the stopping time of n. Similarly, the smallest k such that a k = 1 is called the total stopping time of n. [2] If one of the indexes i or k doesn't exist, we say that the stopping time or the total stopping time, respectively, is infinite. The Collatz conjecture asserts that the total stopping time ...

  9. Pedestrian scramble - Wikipedia

    en.wikipedia.org/wiki/Pedestrian_scramble

    One of the world's most heavily used pedestrian scrambles, the Shibuya Crossing at Hachikō Square in Tokyo. A pedestrian scramble (or exclusive pedestrian interval) is a type of traffic signal movement that temporarily stops all vehicular traffic, thereby allowing pedestrians to cross an intersection in every direction, including diagonally, at the same time.