| http://www.w3.org/ns/prov#value | - Surprisingly enough, its fairly common for traffic police to be trained in that skill.Further, where its relevant to a case (whether or not its a speeding case) anyone can testify to a visual estimate of speed in court; of course, any party hurt by such testimony is free to try to get the trier of fact -- judge or jury depending on whether its a bench or jury trial -- to give less weight to that t
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