Section 2030.10  General Regulations

a)         All waters designated as Restricted Boating Areas shall be posted in accordance with the United States Coast Guard's U.S. Aids to Navigation System, contained in 33 CFR 62, Subpart 62.1, except as provided in subsections (b) and (c).

b)         The use of regulatory markers prescribed by the U.S. Aids to Navigation System shall be further restricted as follows:

1)         When a sign is used as a marker, the sign shall be of square or rectangular shape.  The sign shall be white, with an international orange border and an international orange geometric shape centered on the signboard.

2)         The minimum size of any sign used as a marker shall be 24 inches on each side.

3)         The minimum size of any buoy used as a marker shall be 9 inches in diameter.

4)         The minimum size of any alpha or numeric characters used on any sign or buoy shall be 1 inch of height for every 50 feet of intended visibility, provided that in no case shall the height of the characters be less than 3 inches.

5)         The minimum height of any geometric shape used on any sign or buoy shall be 12 inches.

6)         The minimum band width of any border or geometric shape used on a sign or buoy shall be 2 inches.

(Source:  Amended at 42 Ill. Reg. 13251, effective June 22, 2018)