Illinois Mobile Sources regulations & environmental compliance analysis

Illinois Mobile Sources: What you need to know

Governing Law and Regulations

Vehicle inspection and maintenance (I/M): 35 Illinois Administrative Code (IAC) 276.101 to 276.1002 and 35 IAC 240.151 to 240.193

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Automobile emissions standards:

Smoking vehicles: 35 IAC 240.121

Clean fuel fleet program: 35 IAC 241.101 to 241.142

Heavy-duty vehicle emissions standards:

Diesel-powered heavy-duty vehicles: 35 IAC 240.140 and 35 IAC 240.141

Employer trip reduction and commuting: 42 USC 7511a(d)(1)(B)

Nonroad engines:

Locomotives: 35 IAC 240.122


Program areas: 35 IAC 218.103 and 35 IAC 219.103

Stage II vapor recovery: 35 IAC 218.586 and 40 CFR 51.126

Regulatory Agency

Illinois Environmental Protection Agency (IEPA) Bureau of Air Division of Mobile Source Programs

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. There are many mobile source regulatory requirements implemented nationally by the U.S. Environmental Protection Agency (EPA) that impact mobile sources in Illinois. In addition, the state has established several standards and implemented non-regulatory programs in selected areas to make progress toward attainment of all the national ambient air quality standards.

Administration and enforcement. The IEPA is responsible for the administration and enforcement of the mobile source requirements being implemented in Illinois.

State Requirements


35 IAC 276.101 to 276.1002 and 35 IAC 240.151 to 240.193

Certain areas in Illinois are subject to the vehicle I/M program.


The vehicle I/M program applies to most 1996 and newer gasoline-powered passenger vehicles and light-duty trucks, including vans and sport utility vehicles, after they are 4 ...

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Illinois Mobile Sources Resources

Type Title
Forms Stage II System Decommissioning Notification Form
See all Mobile Sources Resources