We are an internationally recognized railway brake-technology company based in Chicago, IL USA. Developer of the Brake-O-Lator TM our new computerized, automatic portable single car testing system for railway air braking systems. It is unequaled anywhere else and is considered to be the best single-car testing device available. Over 500 are now in service and have tested more than 500,000 railcars efficiently and economically.. Our Jim Shoe (TM) brake force measurement equipment is the industry Standard Internationally. We have for more than forty years been the innovator and leader in all forms of brake testing.