TY  - BOOK
AU  - Lyles,Richard W.
ED  - United States.
TI  - Comparison of Signs and Markings for Passing/ no :
U1  - 388.31 
PY  - 1981///
CY  - Washington, D.C.
PB  - United States Department of Transportation
KW  - Traffic flow
KW  - Mathematical models
KW  - United States
KW  - Transportation engineering
KW  - Congresses
N1  - FHWA/RD-81/094
ER  -