Rhode Island Mobile Sources regulations & environmental compliance analysis

Rhode Island Mobile Sources: What you need to know

Governing Law and Regulations

Vehicle inspection and maintenance (I/M): Rhode Island Rules and Regulations (RI Rule) 12-031-034

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Automobile emissions standards:

Low-emission vehicles (LEV): RI Rule 12-031-037

Heavy-duty vehicle emissions standards:

Diesel engine anti-idling program: RI Rule 12-031-045

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


Reformulated gasoline (RFG): Rhode Island General Laws (RI Gen. Laws) 31-37-7.1

Stage II vapor recovery: RI Rule 12-031-011

Regulatory Agencies

Rhode Island Department of Environmental Management (DEM) Bureau of Environmental Protection Office of Air Resources

Rhode Island Department of Motor Vehicles (DMV)

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Many mobile source regulatory programs are implemented at the federal level and are having a positive effect on air quality in Rhode Island. In addition, the state has implemented vehicle inspection and maintenance (I/M), adopted stringent California vehicle standards, and promulgated diesel engine idling restrictions.

Administration and enforcement. DEM's Office of Air Resources, in conjunction with the DMV, administers and enforces the mobile source programs in Rhode Island.

State Requirements


RI Rule 12-031-034

Rhode Island requires safety and emissions inspections for all vehicles registered in the state.

Subject Vehicles and Inspection Area

Every car and light truck, including diesel vehicles, registered in Rhode Island weighing 8,500 pounds (lb) or less gross vehicle weight rating (GVWR) requires an inspection consisting of both a test for safety and for emissions.

Vehicles over 8,500 lb GVWR ...

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More on this topic:

Governing Law and Regulations
Regulatory Agencies
Comparison: State vs. Federal
State Requirements

Rhode Island Mobile Sources Resources

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