Vehicular Speed-Limit Reduction

Speed-limit reductions are an enforceable control strategy under Texas’ State Implementation Plan (SIP). This page provides information and downloadable documents about this control strategy.

• Background
• Associated SIP Revisions
• Contacts

Background

Areas affected: Houston-Galveston-Brazoria (HGB), Dallas-Fort Worth (DFW)

Start date: May 1, 2002 (DFW), May 1, 2005 (HGB)
End date: None
Applicability Period: Year-round
Source type: On-road mobile source
Emissions targeted: Nitrogen oxides (NOx)
Rule/Citation: N/A

Description: The areas affected include eight HGB counties (including Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, Montgomery, and Waller) and nine DFW counties (including Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall and Tarrant). This control strategy reduces speed limits on roadways in the HGB and DFW nonattainment areas by 5 mph to reduce air pollution. More information is available from the North Central Texas Council of Governments.

Associated SIP Revisions

Since these measures are implemented by the Texas Department of Transportation, no rules have been adopted by the TCEQ. The SIP revisions in which this measure is adopted are listed below.

Contacts

Air Quality Division, TCEQ
Phone: 512/239-6338