TY - BOOK AU - McGee,Hugh W. ED - American Association of State Highway and Transportation Officials. ED - United States. TI - Freeway guide sign replacement: policies and criteria SN - 0309049024 : AV - TE228 .M34 1991 U1 - 625.794 20 PY - 1991///] CY - Washington, D.C. PB - Transportation Research Board, National Research Council KW - Traffic signs and signals KW - Maintenance and repair N1 - "Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."; "April 1991."; Includes bibliographical references (p. 30-31) ER -