IS 9905 : 1981 Specification for Pneumatic Coupling between Tractors and Trailers

1 Scope

1.1 This standard specifies type, dimensions and other requirements ofcoupling head and the pipe line of the pneumatic brake connection betweentractor and trailer.

1.2 This standard is applicable to vehicle combinations equipped withpneumatic braking systems with two lines that is one control line and one supplyline.