In addition to its use in non-ABS territory, what sign may be used at the end of ABS territory?

In addition to its use in non-ABS territory, what sign may be used at the end of ABS territory?

• A. End Automatic Block Sign
• B. End of ABS Area Sign
• C. End Signal Signs
• D. ABS Territory Exit

Answer: (A)

The sign marks the boundary where Automatic Block Signal protection ends. In NORAC rules, the End Automatic Block Sign is used to indicate that you are leaving automatic block territory. It can be used at the end of ABS territory to tell the crew that the protections of ABS no longer apply and that they are moving into non-ABS territory or into a different signaling regime, just as it is used to mark the end of block protection in non-ABS areas. The other options don’t describe a standard marker for transitioning out of ABS territory.

The sign marks the boundary where Automatic Block Signal protection ends. In NORAC rules, the End Automatic Block Sign is used to indicate that you are leaving automatic block territory. It can be used at the end of ABS territory to tell the crew that the protections of ABS no longer apply and that they are moving into non-ABS territory or into a different signaling regime, just as it is used to mark the end of block protection in non-ABS areas. The other options don’t describe a standard marker for transitioning out of ABS territory.