Traffic Signs for Illinois
Equip Illinois roads, lots, and work zones with MUTCD-compliant traffic signs. Start with the Illinois-specific accessible parking sign required here, then add the regulatory and warning signs every site needs.
Illinois-Specific Signs
Built to meet Illinois requirements.
Illinois Traffic Sign Requirements
Illinois adopts the National MUTCD (Manual on Uniform Traffic Control Devices) together with a state supplement, the Illinois Supplement to the National MUTCD. Signs installed on Illinois public roads must meet the national standard plus the state's specific modifications, enforced through the Illinois Department of Transportation.
MUTCD compliance
The MUTCD defines every standard regulatory (R), warning (W), and guide (G) sign — its exact size, legend, and colors. Our Illinois traffic signs are produced to those specifications so they are compliant out of the box, whether you need stop, yield, speed limit, or warning signs.
Reflectivity
Signs that face traffic must meet the FHWA minimum retroreflectivity levels in the MUTCD, and agencies are required to maintain them. We offer engineer-grade and high-intensity prismatic reflective sheeting to meet Illinois road and work-zone requirements.
Illinois Sign FAQs
- Do traffic signs in Illinois have to be MUTCD-compliant?
- Yes. Traffic signs on public roads in Illinois must conform to the MUTCD as adopted with the state supplement, which sets the required size, legend, color, and reflectivity for each sign. Our signs are made to that standard.
- Who regulates traffic signs in Illinois?
- The Illinois Department of Transportation sets and enforces traffic-sign standards in Illinois, following the MUTCD.
- Does Illinois modify the national MUTCD?
- Illinois adopts the National MUTCD together with a state supplement, the Illinois Supplement to the National MUTCD, so signs must meet both the national standard and the state's modifications.