TY  - BOOK
AU  - Dudek,Conrad L.
ED  - National Research Council (U.S.).
ED  - National Cooperative Highway Research Program.
ED  - American Association of State Highway and Transportation Officials.
ED  - United States.
TI  - Changeable message sign displays during non-incident, non-roadwork periods
T2  - NCHRP synthesis,
SN  - 9780309098137 (pbk.)
AV  - TE228 .D829 2008
U1  - 0 
PY  - 2008///
CY  - Washington, D.C.
PB  - Transportation Research Board
KW  - Electronic traffic controls
KW  - Traffic signs and signals
KW  - Variable message signs
KW  - trt
N1  - "A synthesis of highway practice."; At head of title: National Cooperative Highway Research Program; Includes bibliographical references (p. 50-51); Also available online
UR  - http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_syn_383.pdf
ER  -