TY  - BOOK
ED  - Organisation for Economic Co-operation and Development
TI  - Electronic aids for freeway operation: prepared by an OECD Research Group, April 1971
T2  - Road research
AV  - TE228 .O74e 1971
PY  - 1971///]
CY  - [Paris
PB  - OECD
KW  - Electronic traffic controls
KW  - Express highways
KW  - Communication systems
N1  - Summary in French; BIB
ER  -