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For other uses, see Drag strip (disambiguation). Looking down a drag strip. Note the Christmas tree countdown lights in the center Drag racing vehicles ready to race Bring your own cars waiting to run down the dragstrip Snowmobile vs. Motorcycle A dragstrip is a facility for conducting automobile and motorcycle acceleration events such as drag racing. Although a quarter mile (402 m) is the best known measure for a drag track, many tracks are eighth mile (201 m) tracks. The race is begun with a standing start which allows three factors to affect the outcome of the race: reaction time, torque, and traction. Contents 1 Features 2 Equipment requirements 3 Dragstrip locations 4 Typical quarter mile times 5 References 6 External links Features A dragstrip is a straight, purpose-built racetrack, typically an eighth or a quarter mile long, with an additional shutdown area to allow vehicles time to stop after crossing the finish line. Common features also include a water box, where vehicles and motorcycles can do burn-outs to heat up their tires to improve traction. There is a set of lights known as a Christmas tree that counts down to launch time. There are one or two return lanes for the vehicles to return from the end of the track to the pit area. Equipment requirements Almost all sanctioned drag strips have strict rules for fast cars. Special racing safety equipment such as 10 (or more) point roll cages, window nets, engine and transmission shielding, and protective clothing usually become mandatory for cars below 11 or 10 seconds. NHRA also requires roll cages and window nets for cars that finish a quarter mile at over 135 mph (217 km/h). Dragstrip locations Further information: Category:Drag racing venues Typical quarter mile times 1 dragstrip = SI units 0.4023360 km 402.3360 m US customary / Imperial units 0.2500000 mi 1,320.000 ft Acceleration times differ even between identical vehicles due to widely varying testing methodologies - driver/rider differences, payload, track surface conditions, weather, and air temperature. Racing vehicles Vehicle Quarter mile time[clarification needed] Notes Rocket dragster 3.2 sec @ ~390 mph (630 km/h) Top Fuel Dragster 4.4 sec @ ~335 mph (539 km/h) [1] Top Fuel Funny Car 4.6 sec @ ~330 mph (530 km/h) [1] Top Alcohol[clarification needed] 5.2 sec @ ~250 mph (400 km/h) Top Doorslammer 5.8 sec @ ~250 mph (400 km/h) Pro Modified 6.0 sec @ ~230 mph (370 km/h) Pro Stock 6.6 sec @ ~205 mph (330 km/h) [1] Top Fuel Bike 6.1 sec @ ~238 mph (383 km/h) Pro Stock Motorcycle 7.0 sec @ ~195 mph (314 km/h) [1] Electric Motorcycle 7.8 sec @ ~168 mph (270 km/h) [2] References ^ a b c d NHRA ^ TG Daily External links National Hot Rod Association (NHRA) International Hot Rod Association (IHRA)