Louisiana Mobile Sources regulations & environmental compliance analysis

Louisiana Mobile Sources: What you need to know

Governing Law and Regulations

Vehicle inspection and maintenance (I/M): Louisiana Administrative Code (LAC) 55:III.817 to 55:III.819

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


Stage II vapor recovery: LAC 33:III.2132 and 40 CFR 51.126

Regulatory Agencies

Louisiana Department of Environmental Quality (DEQ)

Louisiana Department of Public Safety (DPS)

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 Louisiana. In addition, the state has established additional programs to implement optional federal programs designed to make progress toward attainment of all the National Ambient Air Quality Standards (NAAQS).

Administration and enforcement. The DEQ works in conjunction with the DPS to administer and enforce the vehicle I/M program.

State Requirements


LAC 55:III.817 to 55:III.819

All vehicles statewide that are 1980 model year or newer and have a gross vehicle weight rating (GVWR) less than 10,000 pounds (lb) are subject to the antitampering inspection requirements.

Inspection Area

Depending on the model year of the vehicles, gasoline-powered motor vehicles with a GVWR less than 10,000 lb registered in the Baton Rouge ozone nonattainment area are subject to emissions testing and/or gas cap pressure testing in addition to the antitampering inspection. The Baton Rouge ozone nonattainment area is composed of the following:

  • Ascension parish
  • East Baton Rouge parish
  • Iberville parish
  • Livingston parish
  • West Baton ...

Read more about Mobile Sources

Louisiana Mobile Sources Resources

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