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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.
60/70 mph (96/112 km/h) [fn 18] dependent on class (motorways) 50/60/70 mph (80/96/112 km/h), ditto (trunk dual-carriageways) 60 mph (96 km/h) 40/50/60 mph (64/80/96 km/h) dependent on class. [fn 18] 10% + 2mph Gibraltar [70] 30–50: N/A: N/A: N/A: 35 for registered goods vehicles and buses: 10 Isle of Man [fn 16] 30 mph (48 km/h) N/A: No ...
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. [24]
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 ]
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.
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.
The Locomotives Act 1865 (the 'Red Flag Act') reduced the speed limit to 4 mph (6.4 km/h) in the country and 2 mph (3.2 km/h) in towns and required a man with a red flag or lantern to walk 60 yd (55 m) ahead of each vehicle, and warn horse riders and horse drawn traffic of the approach of a self-propelled machine.
Speed limits in freeway work zones are statutorily limited to 60 mph (97 km/h) 24 hours per day. If workers are present (and not behind a barrier wall), drivers must slow to 45 mph (72 km/h) for the workers' safety. For many years, trucks generally had a speed limit of 60 mph (97 km/h), but this was increased to 65 mph (105 km/h) in 2017. [86]