Friction Control Methods Used by the Transit Industry

Document Type


Publication Date


Subject Area

infrastructure - track, planning - methods, mode - rail


Control, Friction, Guidelines, Lubrication, Noise control, Rail transit, Railroad tracks, Research, Rolling contact, Wear


This report includes the results of a research task carried out under Transit Cooperative Research Program (TCRP) Project D-7, "Joint Rail Transit-Related Research with the Association of American Railroads/Transportation Technology Center, Inc., Friction Control Used by the Transit Industry." Information is provided on a variety of onboard and wayside friction control applications used in a transit environment to reduce noise, reduce wheel and rail wear, control truck steering forces, and reduce train energy. Descriptions of these applications are provided, along with their most appropriate uses. Operational issues associated with their use are also discussed. The report culminates in the provision of guidelines for selecting various types of friction control technologies. This report should be of interest to engineers involved in the design, construction, maintenance, and operation of rail transit systems.


Permission to link to report given by TRB.