When ACSES is cut out, what is the maximum speed for passenger trains in ABS territory?

The correct answer is 59 MPH because, when the Advanced Civil Speed Enforcement System (ACSES) is cut out, the operating rules stipulate that passenger trains in Automatic Block Signal (ABS) territory must adhere to a maximum speed limit of 59 MPH. This restriction is in place to ensure safety and operational control where automated systems that monitor and enforce speed limits are not functional.

In ABS territory, the signaling and track layout may not provide the same levels of protection as when ACSES is active, hence the need for a lower maximum speed. This reduced limit allows for safer train movements while still permitting efficient operations under manual control.

The other speed limits provided in the options correspond to specific operating conditions or restrictions that do not apply when ACSES is disabled for passenger trains. Understanding the rationale behind the 59 MPH limit is essential for maintaining safety standards in rail operations when automated systems are not operational.