A stop signal displayed at an intermediate block signal in ABS territory with a 'Permissive' designation (marked 'P') authorizes a train to:

1. Proceed at normal speed since permissive signals have no stopping requirement
2. Stop, and then proceed at restricted speed after stopping, prepared to stop short of a train or obstruction
3. Stop and wait for the dispatcher to clear the block
4. Proceed at medium speed without stopping, as permissive signals are advisory only