Warning signs and advisory speed signs :
reevaluation of practice /
prepared by Helmut T. Zwahlen (Department of Industrial and Systems Engineering, College of Engineering and Technology, Ohio University).
|Related Names:||Zwahlen, Helmut T.|
Athens, Ohio : The Department ; 1983]
Traffic / Speed /
Speed limits > Speed limits / United States > Speed limits / United States / States > Speed limits / United States / States / Evaluation.
Traffic signs and signals > Traffic signs and signals / United States > Traffic signs and signals / United States / States > Traffic signs and signals / United States / States / Evaluation.
xi, 174 p. :
ill., charts ;
28 cm. +
executive summary (i, 3 p.)
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|Item Link||Original Source|
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