TY  - BOOK
AU  - Bowman,Brian L.
ED  - National Cooperative Highway Research Program.
ED  - National Research Council (U.S.).
ED  - American Association of State Highway and Transportation Officials.
ED  - United States.
TI  - Supplemental advance warning devices
T2  - Synthesis of highway practice / National Cooperative Highway Research Program,
SN  - 0309053145
AV  - TE228 .B69 1993
U1  - 388.312 20
PY  - 1993///
CY  - Washington, D.C.
PB  - National Academy Press
KW  - Traffic signs and signals
KW  - Traffic safety
N1  - "Transportation Research Board, National Research Council."; "Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."; "Project  20-5 FY 1989 (Topic 21-09)"--T.p. verso; Includes bibliographical references (p. 78)
ER  -