Texas Mobile Sources regulations & environmental compliance analysis

Texas Mobile Sources: What you need to know

Governing Law and Regulations

Vehicle inspection and maintenance (I/M): 30 Texas Administrative Code (TAC) 114.2 and 30 TAC 114.50 to 114.87

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Automobile emissions standards:

Automobile antitampering requirements: 30 TAC 114.20 and 30 TAC 114.21

Automobile idling limits: 30 TAC 114.510 to 114.517

Heavy-duty vehicle emissions standards:

Diesel grant program: 30 TAC 114.620 to 114.629

Heavy-duty vehicle idling limits: 30 TAC 114.510 to 114.517

Clean School Bus Program: 30 TAC 114.640 to 114.648

Clean Fleet Program: 30 TAC 114.650 to 114.658

Drayage trucks: 30 TAC 114.680 to 114.682

Employer trip reduction (ETR) and commuting:

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

Nonroad engine standards:

Gasoline (spark ignition) engines: 30 TAC 114.420 to 114.429


Gasoline volatility: 30 TAC 114.301 to 114.309

Gasoline volatility in El Paso County: 30 TAC 115.252 to 115.259

Oxygenated gasoline program: 30 TAC 114.100

Diesel fuel standards: 30 TAC 114.312 to 114.319

Stage I vapor recovery: 30 TAC 115.221 to 115.229

Stage II vapor recovery: 30 TAC 115.240 to 115.248 and 40 CFR 51.126


Vehicle refueling: 30 TAC 115.248

Regulatory Agencies

Texas Commission on Environmental Quality (TCEQ)

Texas 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 Texas.

Also, the state and local air pollution control agencies have established additional programs to implement optional federal programs and other requirements to control mobile source emissions and make progress ...

Read more about Mobile Sources

More on this topic:

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