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  2. Retroreflective sheeting - Wikipedia

    en.wikipedia.org/wiki/Retroreflective_sheeting

    Sheeting has replaced button copy as the predominant type of retroreflector used in roadway signs. There are several grades of retroreflective sheeting which include the three major grades: engineer grade, high intensity prismatic (HIP) and diamond grade. Within these categories are further delineations based on material used and visibility ...

  3. Three-level diamond interchange - Wikipedia

    en.wikipedia.org/wiki/Three-level_diamond...

    A three-level diamond interchange is a type of highway interchange where through traffic on both main roads is grade-separated from intersections which handle transferring traffic. [1] It is similar in design to a three-level stacked roundabout except for its use of (usually signalled) conventional intersections , and can be thought of as two ...

  4. Raised pavement marker - Wikipedia

    en.wikipedia.org/wiki/Raised_pavement_marker

    Raised reflective markers, such as plastic, ceramic, or metal ones, include a lens or sheeting that enhances their visibility by retroreflecting automotive headlights, while glass road studs gather automotive headlights with a dome shape and reflect the lights with a reflective layer within.

  5. Road signs in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Road_signs_in_the_United...

    Class 1 (engineering grade) is a low-performance glass bead product, it was the first reflective material used on the UK network and invented by 3M. Today in the UK it is used only for street nameplates and parking signs. Class 2 (high-intensity) is generally a microprismatic product which uses truncated cube corners to return light to the driver.

  6. Retroreflector - Wikipedia

    en.wikipedia.org/wiki/Retroreflector

    A set of three mutually perpendicular reflective surfaces, placed to form the internal corner of a cube, work as a retroreflector. The three corresponding normal vectors of the corner's sides form a basis (x, y, z) in which to represent the direction of an arbitrary incoming ray, [a, b, c].

  7. Madman accused of two NYC train stabbings is busted in ... - AOL

    www.aol.com/madman-accused-two-nyc-train...

    Jamar Banks — a 52-year-old with at least 87 prior arrests and a history of mental illness — was nabbed by the NYPD Warrant Squad around midnight at the 219th Street station in The Bronx and ...