ANRP 6001 - Overrun Of Limit Of Authority

Absolute Signal Blocking (ASB) is a method of working in the Danger Zone by maintaining controlled absolute signals at STOP.

To prescribe the rules for managing rail traffic when it is required to set back or propel on running lines in the Network.

The function of this rule is to outline how rail traffic that has been prevented from moving is used to provide protection for workers or worksites.