1. A device to measure the linear speed of a train, which is comprised of: a. a plurality of sensors; wherein the plurality of the sensors will calculate the speed of a train; wherein the plurality of sensors are secured to a bar; wherein a plurality of bars may be used; said bar is secured to a railroad track; wherein each individual sensor is encased in a protective casing; b. a plurality of rare earth magnets; wherein the plurality of rare earth magnets are positioned along the exterior of the bar; wherein the plurality of rare earth magnets secures the bar to a rail of a rail road track; c. a controller; wherein the controller is located within the speed sensor casing; wherein the controller transmits the information provided by the sensors to software; wherein the software uses the information provided by the series of sensors to calculate the speed of the train.