TY - BOOK CN - TD 2.30/20: CY - [Washington, D.C.] : DA - [1999] ID - 230083 KW - Truck drivers KW - Drivers' licenses N1 - Caption title. N1 - Shipping list no.: 2000-0240-M. N1 - "May 1999"--P. [4]. N1 - "Publication no. FHWA-MCRI-99-012"--P. [4]. PB - Federal Highway Administration, Office of Motor Carrier and Highway Safety, PP - [Washington, D.C.] : PY - [1999] T1 - Commercial driver's license effectiveness study TI - Commercial driver's license effectiveness study ER -