Traffic patrol.
Contributors: Northwestern University (Evanston, Ill.). Traffic Institute.
Edition: 3rd ed.
Series: Traffic patrol and direction series; Publication / Traffic Institute, Northwestern University ;; no 400; Publication (Northwestern University (Evanston, Ill.). Traffic Institute) ;; no. 400.
Publisher: Traffic Institute, Northwestern University
Published: 1981
Place of publication: Evanston, Ill. (555 Clark St., Evanston 60204)
Language: eng
Subjects: Traffic police.
Notes: Bibliography: p. 9.
"Formerly PN 2150"--Cover.