"Drug and alcohol testing of commercial motor vehicle drivers hearing before the Subcommittee on Highways and Transit of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Tenth Congress, first session, November 1, 2007"@en . . . "Drug and alcohol testing of commercial motor vehicle drivers : hearing before the Subcommittee on Highways and Transit of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Tenth Congress, first session, November 1, 2007"@en . . . . . . . . . . . "Rules"@en . . . . . . . . . .