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  2. 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 ...

  3. Speed limits by country - Wikipedia

    en.wikipedia.org/wiki/Speed_limits_by_country

    Highest-posted speed limits around the world. Kilometres per hour are on the left and miles per hour on the right.* A speed limit is the limit of speed allowed by law for road vehicles, usually the maximum speed allowed.

  4. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    100 years (100 a) = 3.155 6952 Gs [note 2] [note 3] day: d = 24 h = 1440 min = 86.4 ks [note 3] day (sidereal) d ≡ Time needed for the Earth to rotate once around its axis, determined from successive transits of a very distant astronomical object across an observer's meridian (International Celestial Reference Frame) ≈ 86.1641 ks ...

  5. Miles per hour - Wikipedia

    en.wikipedia.org/wiki/Miles_per_hour

    Miles per hour (mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour.It is used in the United Kingdom, the United States, and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US.

  6. MPH - Wikipedia

    en.wikipedia.org/wiki/MPH

    MPH or mph is a common abbreviation of miles per hour, a measurement of speed. MPH may also refer to: MPH, a 2014–2015 comic book series by Mark Millar and Duncan Fegredo; Make Poverty History, campaign to end poverty in Africa; Manlius Pebble Hill School, DeWitt, New York, US; Martinair's airline code; Master of Public Health, degree

  7. Indian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Indian_units_of_measurement

    In Hindi ½ Seer = Adha (½) Seer, or Adher 1 Ser = 2 Adher = 4 Pav = 16 Chattank = 80 Tola = 933.1 grams 1 Savaser = 1 Ser + 1 Pav (1¼ Seer) 1 Savaser weighed 100 Imperial rupees In Hindi 1¼ Seer = Sava (1¼) Seer, or Savaser 1 Dhaser = 2 Savaser = 2½ Seer In Hindi 2½ Seer = Dhai (2½) Seer, or Dhaser 1 Paseri = 2 Adisari = 5 Seer

  8. 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.

  9. Kilometres per hour - Wikipedia

    en.wikipedia.org/wiki/Kilometres_per_hour

    Speed limit sign in the Republic of Ireland, using "km/h.". The SI representations, classified as symbols, are "km/h", "km h −1" and "km·h −1".Several other abbreviations of "kilometres per hour" have been used since the term was introduced and many are still in use today; for example, dictionaries list "kph", [3] [4] [5] "kmph" and "km/hr" [6] as English abbreviations.