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               A BILL TO BE ENTITLED
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               AN ACT
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            relating to the authority of the Texas Transportation Commission to  | 
         
         
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            establish variable speed limits. | 
         
         
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                   BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF TEXAS: | 
         
         
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                   SECTION 1.  Section 545.353, Transportation Code, is amended  | 
         
         
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            by adding Subsection (k) to read as follows: | 
         
         
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                   (k)  The commission by rule may establish a variable speed  | 
         
         
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            limit program to allow the temporary lowering of a prima facie speed  | 
         
         
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            limit to address inclement weather, congestion, road construction,  | 
         
         
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            or any other condition that affects the safe and orderly movement of  | 
         
         
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            traffic on a roadway for which the commission has the authority to  | 
         
         
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            establish a speed limit.  Notice of a speed limit established under  | 
         
         
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            the program may be displayed using a stationary or portable  | 
         
         
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            changeable message sign, as defined by Section 544.013.  A speed  | 
         
         
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            limit that is established under the program: | 
         
         
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                         (1)  must be based on an engineering and traffic  | 
         
         
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            investigation; | 
         
         
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                         (2)  may be effective for all or a designated portion of  | 
         
         
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            the highway and may be effective for any period of the day or night,  | 
         
         
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            as the Texas Department of Transportation determines necessary; | 
         
         
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                         (3)  may not be less than 10 miles per hour below the  | 
         
         
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            prima facie speed limit on the portion of the highway to which it  | 
         
         
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            applies; and | 
         
         
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                         (4)  is effective only when the speed limit is posted  | 
         
         
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            and only if a sign notifying motorists of the change in speed limit  | 
         
         
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            is posted not less than 500 feet but not more than 1,000 feet before  | 
         
         
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            the point at which the speed limit begins. | 
         
         
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                   SECTION 2.  This Act takes effect immediately if it receives  | 
         
         
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            a vote of two-thirds of all the members elected to each house, as  | 
         
         
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            provided by Section 39, Article III, Texas Constitution.  If this  | 
         
         
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            Act does not receive the vote necessary for immediate effect, this  | 
         
         
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            Act takes effect September 1, 2023. |