Traffic Spikes Traffic control spikes are ideal for controlling traffic direction and speed through a controlled entry location or parking lot. Traffic spikes prevent vehicles from proceeding through a traffic lane in the wrong direction by enforcing one-way traffic lanes. Flush mount spikes and surface mounted spikes are available with Spring Retraction or Weighted Retraction. Speed bumps should always be used to force drivers to slow down while driving through the controlled entry point. Speed Bumps control vehicular traffic to a safe and required 5 MPH speed while driving over parking lot traffic spike strips. Barrier Gate Arm Operators, Traffic Control Spikes, Speed Bumps, Motorized Traffic Spikes, all at the best price and exceptional service.