This directional spike system is used to control traffic in one direction. Vehicle may enter, but not to exit without severe tire damage The row of rising steel spikes will totally destroy the tires and rims of any vehicle attempting unauthorized entry. The operating speed of the spike barrier is app.2 seconds. Ideal for controlling traffic directions, and speed through a controlled entry location Traffic spikes prevent vehicles from proceeding through a traffic lane in the wrong direction by enforcing one-way traffic lanes.