Background for traffic law enforcement.
Contributors: Northwestern University (Evanston, Ill.). Traffic Institute.
Edition: 3rd ed.
Series: Traffic law enforcement series.
Publisher: Traffic Institute, Northwestern University
Published: 1981
Place of publication: Evanston, Ill. (555 Clark St., Evanston 60204)
Language: eng
Subjects: Traffic regulations -- Illinois.
Notes: Bibliography: p. 7.
"Publication no. 551 (formerly PN 2002)"