Our Speed Bump Signs give warning to drivers that a Speed Bump is ahead on your Street or in your Parking Lot. Warn drivers with Caution, Slow, White, or Yellow Speed Bump Signs. At SafetySign.com our Speed Bump Signs are designed to Slow Down or Calm Traffic. Combine them with a 5 MPH Speed Limit Sign and provide the best signage you can to keep traffic speed in your community to a minimum. Keep drivers alert and safe; keep pedestrians safe from excessively fast traffic, and ensure your community streets are more of a pleasant drive than a drag race strip. Control the traffic on your street today with Speed Bump Signs from SafetySign.com.