In the case of a divided highway, the traveled way of each of the separated roadways for traffic in opposite directions is a main-traveled way. It does not include such facilities as frontage roads, turning roadways, or parking areas.
225 ILCS 440/3.05
"Main-traveled way" means the traveled way of a highway on which through traffic is carried
Known as the Highway Advertising Control Act
The act spans §§ 225-440-1 to 225-440-9-5 (54 sections).
P.A. 77-1815.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.