Centerline Botts Dots

Botts dots, or “raised pavement markers,” are small bumps lining the centerline or edgeline of a roadway. They are often used on curves where vehicles have a tendency to deviate outside of the proper lane, risking collision. Raised reflectors improve the nighttime visibility of the roadway edges.

Photo of centerline botts dots. 


  • Inexpensive.
  • Does not physically slow emergency vehicles or buses.
  • Can help keep drivers in the appropriate travel lane on curves and under low-visibility conditions.


  • Noise caused by Botts Dots.
  • Requires regular maintenance.
  • Has not been shown to significantly reduce travel speeds.


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