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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.
8–12 mph 12–19 km/h 3.4–5.4 m/s 2–4 ft 0.6–1.2 m Large wavelets; crests begin to break; foam of glassy appearance; perhaps scattered white horses Leaves and small twigs in constant motion; light flags extended 4 Moderate breeze 11–16 knots 13–18 mph 20–28 km/h 5.5–7.9 m/s 3.5–6 ft 1–2 m
The first numeric speed limit for automobiles was the 10 mph (16 km/h) limit introduced in the United Kingdom in 1861. [3] As of 2018 the highest posted speed limit in the world is 160 km/h (99 mph), applied on two motorways in the UAE. [4]
5 mph (8 km/h) United States [fn 16] 25–35 miles per hour (40–56 km/h) (Varies by State) 55–85 miles per hour (89–137 km/h) [fn 20] [fn 21] 40–65 miles per hour (64–105 km/h) [fn 22] Restrictions only in some states, typically 5–15 mph lower. None formally, though jurisdiction-dependent Venezuela: 40–60 kilometres per hour (25 ...
1.0 km/h (0.62 mph) km/h mph; Imperial & US customary: mile per hour: mph mph 1.0 ...
The limit for "rural residential districts" and Class V highways outside the city or town compact is 35 mph (56 km/h). The limit for any "business or urban residence district" is 30 mph (48 km/h). School zones receive a 10 mph (16 km/h) reduction in the limit 45 minutes before and after the beginning and end of a school day. The speed limit for ...
As of May 15, 2017, 41 states have maximum speed limits of 70 mph (113 km/h) or higher. 18 of those states have 75 miles per hour (121 km/h) speed limits or higher, while 7 states of that same portion have 80 mph (129 km/h) speed limits, with Texas even having an 85 miles per hour (137 km/h) speed limit on one of its toll roads.
160 mph (257 km/h) Texas Central Railway; 3 segments of the Northeast Corridor totaling 33.9 mi (54.6 km) in Rhode Island/Massachusetts [14] and an additional 16 mi (26 km) in New Jersey; Brightline West will have Class 8 trackage on its 218 mi (351 km) route between Rancho Cucamonga, California and Las Vegas, Nevada, going at top speeds of 186 ...