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1-Hour Attainment Demonstration SIP: Speed Limit Reduction Measure

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Map

Roadway Listing

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Latest Information (2003-2004)

In 2003, the 78th Texas Legislature passed and the Governor signed into law House Bill 1365, relating to the Texas Emissions Reduction Plan. In Section 25 of the final bill, the Legislature discontinues the authority of the Texas Transportation Commission to approve Environmental Speed Limits in the State. It is the North Central Texas Council of Governments’ interpretation that no new environmental speed limits may be approved and the environmental speed limits currently implemented will remain in effect.

The following is a link to House Bill 1365 as passed by both houses of the Legislature. Section 25 relating to environmental speed limits is on page 18 of the document. http://www.legis.state.tx.us/billlookup/text.aspx?LegSess=78R&Bill=HB1365

History

Note: The Texas Natural Resource Conservation Commission (TNRCC) changed its name to Texas Commission on Environmental Quality (TCEQ) on September 1, 2002.

On April 28, 2000, the Texas Natural Resource Conservation Commission (TNRCC), the State of Texas' environmental agency, submitted the Dallas-Fort Worth Attainment Demonstration State Implementation Plan (SIP) to the U.S. Environmental Protection Agency (EPA). The SIP contains several emission reduction control strategies to improve air quality in the region to reach attainment by November 15, 2007. One of those control strategies is the Speed Limit Reduction Measure.

The Speed Limit Reduction Measure states, "Beginning September 1, 2001, speed limits on roadways with a current maximum speed limit of 70 mph will be reduced to 65 mph, while speed limits on roadways with a current maximum speed limit of 65 mph will be reduced to 60 mph." The Speed Limit Reduction Measure has been implemented in the Counties of Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall and Tarrant.

TCEQ is responsible for identifying roadway locations effected by this SIP rule. On behalf of TCEQ, the North Central Texas Council of Governments (NCTCOG), serving as the Metropolitan Planning Organization for the Dallas-Fort Worth Metropolitan Area, inventoried roadways with current speed limits of 65 miles per hour mph and 70 mph in the North Central Texas region. NCTCOG coordinated with the Texas Department of Transportation (TxDOT), the North Texas Tollway Authority (NTTA), and local governments to achieve an accurate listing of affected roadways.

Acknowledging the need for speed limit reductions in the region to improve air quality, the Regional Transportation Council approved the transmittal of the map and listing of affected roadways to TCEQ on December 14, 2000. TCEQ, serving as the regulatory agency, submitted the request for the speed limit changes to TxDOT-Austin and to NTTA. The Texas Transportation Commission has the authority to change speed limits for the state highway system. After evaluating the request from TCEQ, the Commission made final determination for approval of the speed limit reduction request in January 2001. The Commission then sent approval back to the TxDOT-Dallas and TxDOT-Fort Worth Districts for implementation. The NTTA Board of Directors has the authority to change speed limits on toll roads in North Central Texas. Hence, the NTTA Board of Directors made final determination for approval of the speed limit reduction request for all toll roads in North Central Texas.

A spreadsheet listing and corresponding map is provided to help identify and visualize where the speed limit reductions have occurred. Segment ID numbers from the map correspond to the Segment ID numbers on the listing.

For additional information about the SIP Speed Limit Reduction Measure in the Dallas-Fort Worth area, please contact Chris Klaus(cklaus@nctcog.org).

Follow the links below for more information:

2/5/2014  12/01/2010   CG

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