Oklahoma Mobile Sources regulations & environmental compliance analysis

Oklahoma Mobile Sources: What you need to know

Governing Law and Regulations

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

Regulatory Agency
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U.S. Environmental Protection Agency (EPA) Region 6

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. EPA that impact mobile sources in Oklahoma.

Administration and enforcement. EPA administers and enforces the federal mobile source requirements that may affect Oklahoma.

State Requirements


42 USC 7511a(d)(1)(B)

The Clean Air Act Amendments of 1990 required states that have severe or extreme ozone nonattainment areas to revise their state implementation plan (SIP) by adopting new regulations to reduce work-related vehicle trips and miles traveled by employees. In 1995, Congress amended the law to allow states to remove employer trip reduction (ETR) programs from the SIP, as long as the state can maintain emissions reductions equivalent to those achieved with the ETR program. Oklahoma has not implemented an ETR program.

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Oklahoma Mobile Sources Resources

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