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The Victorian Institute of Forensic Pathology and Monash University's Department of Forensic Medicine in Melbourne, Australia have found that drivers who use cannabis are actually less likely to cause fatal accidents than drug-free drivers, and are no more likely than other drivers to be killed or seriously injured in road accidents. One experiment tested marijuana-intoxicated drivers on both a closed course and on a crowded city street. It found that the elements of driving most affected were concentration and judgment. An experiment involving a driving simulator that tested actual driving ability according to how many mistakes are incurred by sober, drunk, and high subjects found that marijuana, unlike alcohol, does not significantly affect driving ability. It was found that these results hold true for even higher doses (within reason) and inexperienced marijuana users. In fact, the only significant difference reported by the stoned subjects was an altered perception of time, which effectively made them drive relatively slower.