Transmitting movement authorities to trains independently of the interlocking controlling lineside signals.

摘要

A train control system transmits movement authorities to a train independently of the interlocking that controls the lineside signals (1). The state of the railway, routes set and train positions are acquired from the control centre (3) or its interface with the interlocking (2). The state of the railway is evaluated to provide information to a radio block centre (5) to enable proceed authorities to transmitted to the train by radio. Preferably, consistency checks are undertaken on the state of the railway (4) to ensure valid information is passed to the radio block centre (5) and action is taken when an invalid situation is detected. The system may also provide for independently checking (6) new movement authorities against those already issued before issue.