Ill. Admin. Code tit. 92, § 550.ILLUSTRATION F
Commercial-Urban
AUTHORITY: Implementing and authorized by Sections 4-210, 4-211, and 4-212 of the Illinois Highway Code (Ill. Rev. Stat. 1981, ch. 121, pars. 4-210, 4-211, and 4-212).DEPARTMENT OF TRANSPORTATION
When the island between drives is less than 25 feet long or less than 10 feet wide, it shall be defined by curves, masonry, or other devices.
*45º min. angle permitted only for one-way driveways.
60º min. angle for two-way driveways.