Two magnetic transducers provide all of the timing signals required for calculation of train presence, speed, length, direction, axle count, and synchronization of data capture from wheel and bearing scanners. The transducers mount directly to the web of the rail with vibration resistant grade 8 hardware. The transducers are vertically adjustable. SmartScan transducers have been tested for reliable operation over a speed range of 7- 100 MPH