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  2. Speed bump - Wikipedia

    en.wikipedia.org/wiki/Speed_bump

    Common speed hump shapes are parabolic, circular, and sinusoidal. [17] In Norway, speed humps are often placed at pedestrian crossings. Generally, speed humps have a traverse distance of about 3.7 to 4.3 m (12 to 14 ft) and span the width of the road. The height of each hump ranges from 8 to 10 cm (3 to 4 in). [17]

  3. Traffic calming - Wikipedia

    en.wikipedia.org/wiki/Traffic_calming

    Physical devices include speed humps, speed cushions and speed tables, sized for the desired speed. Such measures normally slow cars to between 16 and 40 kilometres per hour (10 and 25 mph). Most devices are made of asphalt or concrete but rubber traffic calming products are emerging as an effective alternative with several advantages.

  4. Zebra crossing - Wikipedia

    en.wikipedia.org/wiki/Zebra_crossing

    In encounters, three out of four drivers maintain the same speed or accelerate and only one out of four slows down or brakes. These results indicate that maintained high speed (even exceeding the speed limit of 50 km hour-1) is the signal from the drivers that they do not intend to give way to the pedestrian at the zebra crossing.

  5. Kennewick adopts new speed hump rules. Half in this ... - AOL

    www.aol.com/kennewick-adopts-speed-hump-rules...

    Radars on speed limit signs in the neighborhood documents some drivers reaching more than 70 mph. The six speed humps from the southern stretch of the road were removed for now.

  6. Geometric design of roads - Wikipedia

    en.wikipedia.org/wiki/Geometric_design_of_roads

    PI = point of intersection (point at which the two tangents intersect) T = tangent length; C = long chord length (straight line between PC and PT) L = curve length; M = middle ordinate, now known as HSO – horizontal sightline offset (distance from sight-obstructing object to the middle of the outside lane) E = external distance

  7. Distance from a point to a line - Wikipedia

    en.wikipedia.org/wiki/Distance_from_a_point_to_a...

    Also, let Q = (x 1, y 1) be any point on this line and n the vector (a, b) starting at point Q. The vector n is perpendicular to the line, and the distance d from point P to the line is equal to the length of the orthogonal projection of on n. The length of this projection is given by:

  8. All-way stop activated at 'dangerous' intersection in Makiki

    www.aol.com/news/way-stop-activated-dangerous...

    Dec. 21—A new all-way stop at the intersection of Prospect and Alapai streets and Iolani Avenue aims to reduce speeding and the number of traffic accidents in the area.

  9. Breakover angle - Wikipedia

    en.wikipedia.org/wiki/Breakover_angle

    β° = Breakover angle; C = Underside of chassis; W = Wheel; G = Ground; M = Midpoint of wheelbase Example of a vehicle at a significant breakover angle.. Breakover angle or rampover angle is the maximum possible supplementary angle (usually expressed in degrees) that a vehicle, with at least one forward wheel and one rear wheel, can drive over without the apex of that angle touching any point ...