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  2. Back-up beeper - Wikipedia

    en.wikipedia.org/wiki/Back-up_beeper

    Back-up beepers or an observer are required by OSHA for earth-moving vehicles with an obstructed view to the rear and no one on the ground to help guide the driver. [9] OSHA regulation 29 CFR Part 1926.601(b)(4) requires "a reverse signal alarm audible above surrounding noise level", but only when the motor vehicle has "an obstructed view to the rear".

  3. Back-up collision - Wikipedia

    en.wikipedia.org/wiki/Back-up_collision

    Back-up collision with a lamppost. Back-up collisions happen when a driver reverses the car into an object, person, or other car. Although most cars come equipped with rear view mirrors which are adequate for detecting vehicles behind a car, they are inadequate on many vehicles for detecting small children or objects close to the ground, which fall in the car's blind spot, particularly ...

  4. Unsafe at Any Speed: The Designed-In Dangers of the American ...

    en.wikipedia.org/wiki/Unsafe_at_Any_Speed:_The...

    Nader counters by pointing out that, at the time, annual (and unnecessary) styling changes added, on average, about $700 to the consumer cost of a new car (equivalent to $6,800 in 2023). This compared to an average expenditure in safety by the automotive companies of about twenty-three cents per car (equivalent to $2.22 in 2023). [5]: p187

  5. Ninja rocks - Wikipedia

    en.wikipedia.org/wiki/Ninja_rocks

    Ninja rocks take advantage of the physical properties of tempered glass, disrupting surface compressive stress and causing the glass to shatter. Tempered glass, which is used for the side windows of most vehicles, is manufactured with an extremely high surface compressive stress and high internal tensile stress. This gives it strength and ...

  6. Vehicle glass - Wikipedia

    en.wikipedia.org/wiki/Vehicle_glass

    It is the piece of glass opposite the windshield. Back glass is made from tempered glass, also known as safety glass, and when broken shatters into small, round pieces. [1] Windshields are made of laminated glass, which consists of two layers of glass, separated by a vinyl sheet. [2] Vehicle glass may contain heating coils or antennae. [3]

  7. Multiple-vehicle collision - Wikipedia

    en.wikipedia.org/wiki/Multiple-vehicle_collision

    A multiple vehicle collision (colloquially known as a pileup or multi-car collision), [1] is a road traffic collision involving many vehicles. Generally occurring on high-capacity and high-speed routes such as freeways, they are one of the deadliest forms of traffic collisions.

  8. Roadway noise - Wikipedia

    en.wikipedia.org/wiki/Roadway_noise

    Roadway noise is the collective sound energy emanating from motor vehicles. It consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements. Noise of rolling tires driving on pavement is found to be the biggest contributor of highway noise and increases with higher vehicle speeds. [1] [2] [3]

  9. Electric vehicle warning sounds - Wikipedia

    en.wikipedia.org/.../Electric_vehicle_warning_sounds

    As a result of increased sales of full electric vehicle and hybrid electric vehicles in several countries, some members of the blind community have raised concerns about the noise reduction when those vehicles operate in all-electric mode, as blind people or the visually impaired consider the noise of combustion engines a helpful aid while crossing streets and think quiet hybrids could pose an ...