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Prior to 2009, a speed limit could be defined in kilometers per hour (km/h) as well as miles per hour (mph). The 2003 version of the MUTCD stated that "speed limits shown shall be in multiples of 10 km/h or 5 mph." [118] If a speed limit sign indicated km/h, the number was circumscribed and "km/h" was written below. Prior to 2003, metric speed ...
Abbreviations for "kilometres per hour" did not appear in the English language until the late nineteenth century. The kilometre, a unit of length, first appeared in English in 1810, [9] and the compound unit of speed "kilometers per hour" was in use in the US by 1866. [10] "Kilometres per hour" did not begin to be abbreviated in print until ...
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.
Restrictions only in some states, typically 5–15 mph lower. None formally, though jurisdiction-dependent Venezuela: 40–60 kilometres per hour (25–37 mph) 120 [fn 23] 60–120: 80: 40–60: 5 mph (8 km/h) Vietnam [72] 50–60: 120 (100) 60–90: 60–80: 60–80: 20 km/h Zimbabwe: 60 kilometres per hour (37 mph) 80–120 kilometres per ...
A stack of rectangular speed limit signs in the United States German border crossing sign showing 50 km/h (31 mph) limit in built-up areas, 100 km/h (62 mph) in rural areas, but a legal advisory 130 km/h (81 mph) limit for the Autobahn (motorway), increasing liability in the case of an accident from driving faster [175]
15 mph (24 km/h) in a school zone within 30 minutes of the beginning or end of the school day or whenever/wherever children are present; 20 mph (32 km/h) near an intersection "when the operator's view is obstructed", unless right-of-way is given via signage; 25 mph (40 km/h) in business or residential districts, or other built-up areas
Oklahoma's governor just signed a law adding 5 MPH to the maximum speed limits in that state. [ 1 ] -- Jtn2002 ( talk ) 18:37, 18 April 2019 (UTC) [ reply ] References
Pace [6] in minutes per kilometre or mile vs. slope angle resulting from Naismith's rule [7] for basal speeds of 5 and 4 km / h. [n 1]The original Naismith's rule from 1892 says that one should allow one hour per three miles on the map and an additional hour per 2000 feet of ascent.