ADA Parking Requirements in Illinois

Illinois Follows Federal On The Count

The Illinois Accessibility Code, updated in 2018 and administered by the Illinois Capital Development Board, is built on the federal 2010 ADA Standards. The accessible-space count table is identical to federal, and the one-in-six van scoping ratio is the same, though Illinois frames it around the 98-inch vertical clearance rather than calling it a van mandate. So the count question in Illinois has the federal answer.

The Illinois 16-Foot Rule

Here is where Illinois departs from federal. Instead of the federal two-tier system of a narrow 8-foot car space and a wider van space, the Illinois Accessibility Code sizes every accessible space one of two ways, and both add up to the same total width:

• 8-foot space with an 8-foot aisle. An 8-foot-wide space paired with an 8-foot-wide access aisle. Total: 16 feet.
• 11-foot space with a 5-foot aisle. An 11-foot-wide space paired with a 5-foot access aisle. Total: 16 feet.

Why The 16-Foot Rule Matters

Under the federal standard, an ordinary accessible car space can be 8 feet wide next to a 5-foot aisle, a 13-foot total. Illinois has no such narrow option. Every accessible stall and its aisle occupy at least 16 feet of width, three feet more than a federal car space. On a tight row, that extra width per accessible stall changes the layout, so size the accessible spaces to the 16-foot rule before you fit the standard stalls around them.

Illinois Signage And Fines

Illinois requires a standard sign that also carries the fine amount.

• Standard sign. A permanently mounted R7-8 sign, the US DOT standard accessible-parking sign, with the International Symbol of Accessibility, placed no more than 6 feet horizontally from the front of the space, with the bottom of the sign between 5 and 9 feet above the ground.
• Display the fine. The sign must display the dollar amount of the fine set by the Illinois Vehicle Code, or a higher amount if a local ordinance sets one.
• The fine amount. The Illinois Vehicle Code sets the civil penalty for parking in an accessible space without a valid placard, commonly cited at $250, and municipalities are permitted to set a higher amount. Confirm the figure that applies in your jurisdiction before ordering signs.

Worked Example: 90-Space Illinois Lot

Scenario: a 90-space Illinois retail lot being re-striped.

1. Accessible spaces required: 4 (the 76 to 100 row of the federal table)
2. Van-accessible among them: at least 1
3. Stall geometry: each accessible space plus its aisle totals at least 16 feet, using 8 plus 8 or 11 plus 5
4. Signage: R7-8 sign with the fine amount displayed, bottom mounted 5 to 9 feet above grade.