What is the primary purpose of DCS Rules when ABS Rules cannot be applied?

The primary purpose of DCS (Dispatcher Control System) Rules is to maintain safety and operational integrity in situations where ABS (Automatic Block Signal) Rules cannot be applied. DCS Rules provide a framework for controlling train movements, ensuring that safety protocols are adhered to even in the absence of the more automated ABS system. This includes identifying and mitigating risks, coordinating safe movements, and ensuring that the trains operate within designated limits to prevent accidents.

In scenarios where ABS cannot be implemented—often due to the failure of signaling equipment or specific line conditions—DCS Rules establish clear procedures that the dispatcher and operating personnel must follow to prioritize safety. By emphasizing adherence to safety standards and operational protocols, DCS Rules play a critical role in protecting both the crews and passengers during varied operational challenges.