Medians of divided highways--
Subtitle: freguency and nature of vehicle encroachments
By: by John W. Hutchinson [and] Thomas W. Kennedy
Contributors: Kennedy, Thomas William, 1938- author
Series: University of Illinois. Engineering Experiment Station. Bulletin 487; Illinois cooperative highway research program series -- no. 53; University of Illinois bulletin -- v. 63, no. 123; Illinois cooperative highway research program series -- no. 53.
Publisher: [University of Illinois, Engineering Publications Office]
Published: 1966
Place of publication: Urbana]
Language: eng
Number of pages: 60
Subjects: Express highways; Design; Traffic safety
Notes: "Part of an investigation conducted by the Engineering Experiment Station ... in co-operation with the State of Illinois, Division of Highways, and the U.S. Department of Commerce, Bureau of Public Roads, Project IHR-59."

Includes bibliographical references (page 35 (2d group)).