Economic model for the maintenance of traffic signals
By: by Thorold G. Smith and J. C. Oppenlander.
Contributors: Oppenlander, J. C., joint author.
Series: Purdue University. Joint Highway Research Project. Technical paper no. 4
Publisher: Purdue University
Published: 1968
Place of publication: Lafayette, Ind
Language: eng
Number of pages: 59
Subjects: Traffic signs and signals.
Notes: Bibliography: leaf 59.
"Joint Highway Research Project, project C-35-17DD, file 8-4-30."