Rhode Island Truck Emissions & Clean-Truck Rules

How Rhode Island handles truck emissions

No state emissions test stops a truck passing through. Rhode Island adopted California's Advanced Clean Trucks rule (250-RICR-120-05-37), but its sales mandate starts with model year 2027 and lands on manufacturers, not on your out-of-state truck. Nothing there creates a roadside fee or test for you. Your obligation is federal: keep the DPF and DEF/SCR intact. Deleting emissions equipment risks roughly $45,000 per engine under federal law.

What applies to you

• Program: ACT adopter
• State rule: Adopted California's Advanced Clean Trucks rule (250-RICR-120-05-37), a manufacturer sales mandate on vehicles over 8,500 lb GVWR that begins with model year 2027, later than most adopting states. No state periodic heavy-truck emissions inspection. Out-of-state drivers face no ACT test, fee, or permit. Federal EPA standards otherwise govern.
• Penalty: No state emissions fine binds an out-of-state driver; ACT non-compliance penalties fall on manufacturers. Federal EPA anti-tampering penalties apply: about $45,000 per tampered engine and about $4,500 per defeat device sold or installed.
• DPF / DEF: Federal EPA equipment nationwide, never delete or tamper with it

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