LIFTING RESTRICTIVE SIGNALING IN A BLOCK

摘要

A train control system and method uses signal information from a next block to change a restrictive signal in a block currently occupied by the train to a less restrictive signal if it can be ascertained that the condition causing the more estrictive signal has changed. This may be accomplished by receivin g signal information from the next block while still in the current block and, if the signal information from the next block is no more restrictive than th e signal information in the current block, and the signal in the current block is of a type that can safely be modified, allowing the train to operate as i f the signal information for the current block were less restrictive than the actual, previously received signal information for the current block.