| http://www.w3.org/ns/prov#value | - orado.Federal statistics show that marijuana is a relatively small problem among truck drivers.The Federal Motor Carrier Safety Administration estimates a 0.6% marijuana usage rate among commercial drivers in 2011, based on random tests.The estimates for non-random tests such as pre-employment or post-crash do not break out different types of drugs, but do indicate a slightly higher usage rate in
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