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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.
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 ...
In 1974, Australian speed limits underwent metrication: the urban speed limit of 35 mph (56 km/h) was converted to 60 km/h (37 mph); the rural speed limits of 60 mph (97 km/h) and 65 mph (105 km/h) were changed to 100 km/h (62 mph) and 110 km/h (68 mph) respectively.
SI, and hence the use of "km/h" (or "km h −1 " or "km·h −1 ") has now been adopted around the world in many areas related to health and safety [36] and in metrology [37] in addition to the SI unit metres per second ("m/s", "m s −1 " or "m·s −1 "). SI is also the preferred system of measure in academia and in education.
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.
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 ]
Notes specify if test was 0 to 60 mph (0 to 97 km/h) or 0 to 100 km/h (0 to 62 mph). For comparison, an object in free fall, without any air resistance, near the Earth's surface accelerates from 0–100 km/h in 2.83 seconds and from 0–60 mph in 2.73 seconds.
Interstate highways and some non-Interstate freeways in suburban and rural areas are posted at 65 mph (105 km/h), but many non-Interstate highways are posted at 55 mph (89 km/h) such as US 6, Route 2, and Route 128, or 60 mph (97 km/h), such as Massachusetts Route 3 South of Boston, or 65 mph (105 km/h), such as the freeway portion of US 3.