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  2. Crosswalks in North America - Wikipedia

    en.wikipedia.org/wiki/Crosswalks_in_North_America

    A common-style marked crosswalk with the MUTCD Crosswalk sign. Crosswalks in the United States and Canada are normally found at intersections, though sometimes may be found mid-block. Crosswalk installations must follow the regulations specified in the Manual on Uniform Traffic Control Devices (MUTCD). [1]

  3. Unit doublet - Wikipedia

    en.wikipedia.org/wiki/Unit_doublet

    Approximation of a unit doublet with two rectangles of width k as k goes to zero. In mathematics, the unit doublet is the derivative of the Dirac delta function.It can be used to differentiate signals in electrical engineering: [1] If u 1 is the unit doublet, then

  4. Dirac delta function - Wikipedia

    en.wikipedia.org/wiki/Dirac_delta_function

    In mathematical analysis, the Dirac delta function (or δ distribution), also known as the unit impulse, [1] is a generalized function on the real numbers, whose value is zero everywhere except at zero, and whose integral over the entire real line is equal to one. [2] [3] [4] Thus it can be represented heuristically as

  5. Pedestrian crossing - Wikipedia

    en.wikipedia.org/wiki/Pedestrian_crossing

    A pedestrian crossing (or crosswalk in American and Canadian English) is a place designated for pedestrians to cross a road, street or avenue.The term "pedestrian crossing" is also used in the Vienna and Geneva Conventions, both of which pertain to road signs and road traffic.

  6. Zebra crossing - Wikipedia

    en.wikipedia.org/wiki/Zebra_crossing

    A zebra crossing (British English) or a marked crosswalk (American English) is a pedestrian crossing marked with white stripes (zebra markings). [1] Normally, pedestrians are afforded precedence over vehicular traffic , although the significance of the markings may vary by jurisdiction.

  7. 'Nobody stopped': Who struck two brothers in a crosswalk ...

    www.aol.com/news/nobody-stopped-struck-two...

    Nancy Iskander was in the crosswalk of a quiet Westlake Village street with three of her children when she heard engines roaring. Two sport utility vehicles were barreling toward them.

  8. AP Physics 2 - Wikipedia

    en.wikipedia.org/wiki/AP_Physics_2

    Advanced Placement (AP) Physics 2 is a year-long introductory physics course administered by the College Board as part of its Advanced Placement program. It is intended to proxy a second-semester algebra-based university course in thermodynamics , electromagnetism , optics , and modern physics . [ 1 ]

  9. Do pedestrians have to clear the road before you enter the ...

    www.aol.com/news/pedestrians-clear-road-drive...

    Here’s how far in a crosswalk a pedestrian has to be before you can drive through it, and what the fine is for not yielding the right of way.