Area traffic control systems :  a report / 
prepared by an O.E.C.D. road research group. 
 - 69 pages ;  27 cm 
 - Road research. .
 - Road research. .
<br/><br/> Abstracts in French. 
<br/><br/><label>ISBN: </label>0119205459 
<br/><br/><label>LCCN: </label>72171959 
<br/><br/><label>Nat. Bib. No.: </label>B72-09683 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Traffic engineering<br/>Traffic signs and signals
<br/><br/><label>LC Class. No.: </label>HE333  / .O74 1972