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  2. Rail speed limits in the United States - Wikipedia

    en.wikipedia.org/wiki/Rail_speed_limits_in_the...

    <10 mph (16 km/h) not allowed: Class 1: 10 mph (16 km/h) 15 mph (24 km/h) Much yard, branch line, short line, and industrial spur trackage falls into this category. Class 2: 25 mph (40 km/h) 30 mph (48 km/h) Branch lines, secondary main lines, many regional railroads, and some tourist operations frequently fall into this class.

  3. Beaufort scale - Wikipedia

    en.wikipedia.org/wiki/Beaufort_scale

    39–46 mph 62–74 km/h 17.2–20.7 m/s 18–25 ft 5.5–7.5 m Moderately high waves of greater length; edges of crests break into spindrift; foam is blown in well-marked streaks along the direction of the wind Twigs break off trees; generally impedes progress 9 Strong/severe gale 41–47 knots 47–54 mph 75–88 km/h 20.8–24.4 m/s

  4. Kilometres per hour - Wikipedia

    en.wikipedia.org/wiki/Kilometres_per_hour

    Swedish 30 km/h speed limit – the yellow background provides a contrast in case snow covers the background against which one perceives the road sign. [ 39 ] Since the text "km/h" on this Irish speed limit sign is a symbol, not an abbreviation, it represents both "kilometres per hour" (English) and " ciliméadar san uair " ( Irish ) [ 40 ]

  5. 30 km/h zone - Wikipedia

    en.wikipedia.org/wiki/30_km/h_zone

    The nominal maximum speed limits in these zones are 30 kilometres per hour (19 mph) and 20 miles per hour (32 km/h) respectively. Although these zones do have the nominal speed limit posted , speeds are generally ensured by the use of traffic calming (physical or psychological) measures, though limits with signs and lines only are increasingly ...

  6. 0 to 60 mph - Wikipedia

    en.wikipedia.org/wiki/0_to_60_mph

    The time it takes a vehicle to accelerate from 0 to 60 miles per hour (97 km/h or 27 m/s), often said as just "zero to sixty" or "nought to sixty", is a commonly used performance measure for automotive acceleration in the United States and the United Kingdom. In the rest of the world, 0 to 100 km/h (0 to 62.1 mph) is used.

  7. List of fastest production cars by acceleration - Wikipedia

    en.wikipedia.org/wiki/List_of_fastest_production...

    By 0–60 mph (97 km/h) (less than 3.0 s) [ edit ] Many elements change how fast the car can accelerate to 60 mph. [ ii ] [ iii ] Tires, elevation above sea level, weight of the driver, testing equipment, weather conditions and surface of testing track all influence these times. [ 3 ]

  8. Low-speed vehicle - Wikipedia

    en.wikipedia.org/wiki/Low-speed_vehicle

    Under Motor Vehicle Safety Regulations, a low-speed vehicle is defined as a vehicle, other than an all-terrain vehicle, a truck or a vehicle imported temporarily for special purposes, that is powered by an electric motor, produces no emissions, is designed to travel on 4 wheels and has an attainable speed in 1.6 km of more than 32 km/h (20 mph) but not more than 40 km/h (25 mph) on a paved ...

  9. Speed limit - Wikipedia

    en.wikipedia.org/wiki/Speed_limit

    Research in 1998 showed that the reduction of some 30 mph (48 km/h) United Kingdom speed limits to 20 mph (32 km/h) had achieved only a 1 mph (1.6 km/h) drop in speeds and no discernible reduction in accidents; 20 mph (32 km/h) speed limit zones, which use self-enforcing traffic calming, achieved average speed reductions of 10 mph (16 km/h ...