Following distance
 Vehicle Stopping Distance Reaction Time Distance - (3/4) second Passenger vehicle Stopping Distance Heavy Truck Stopping Distance Following distance is the space between the back of a vehicle and the front of the following vehicle in traffic. National recommendationsAustraliaIn the Australian state of New South Wales, 3 seconds of following distance is recommended.[1] In Queensland,[2] Victoria,[3] and Western Australia,[4] 2 seconds is recommended. EuropeIn the European Union, the two-second rule is recommended, and in some European countries there are penalties for maintaining lower distances.[5] In the European Union, the term "failing to keep a safe distance from the vehicle in front" is used in the Directive (EU) 2015/413 of the European Parliament and of the Council of 11 March 2015 facilitating cross-border exchange of information on road-safety-related traffic offences. In this directive "failing to keep a safe distance from the vehicle in front" means not maintaining sufficient distance from the vehicle in front, as defined in the law of the Member State of the offence.[6] United KingdomIn the UK, it is recommended that 2 seconds of following distance is maintained.[7] United States In the US, for safety it is recommended that 3-4 seconds of following distance is maintained.[8] Extra time should be added for wet, rainy, slippery, foggy or other weather situations accordingly.[9] For heavy duty commercial vehicles it is recommended 4-6 seconds following distance for speeds under 30 mi/h (48 km/h), and 6-8 seconds following distance for speeds over 30 mi/h (48 km/h).[10] Rear-end collisions are the number one type of traffic collisions.[11] See also
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