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Director's Office
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114 W. Commerce
San Antonio, Texas 78205
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Signage: Speed Limit Radar Unit Signs

Speed limit radar unit signs are supplemental traffic control devices which inform motorists of their operating speed on a digital display.

Speed Limit Radar Signs


  • Alerts motorists of their operating speed, which may encourage them to slow down


  • Radar units signs are not appropriate on streets with high volumes
  • Radar unit signs may require regular enforcement to be effective

Eligibility Considerations

  • Operating speeds are 10 mph or more over the posted speed limit
  • Must have sufficient right-of-way for placement of the unit


Reduced Speed One Star   Reduced Volume No Star
Enhanced Safety One Star   Maintenance Three Star

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