13.1.4 Cab Signals Cut In and Out
The cab signal on the lead unit must be cut in before entering and
within ACS territory and placed in partial cutout after leaving ACS
The cab signal must be placed in partial cutout on all
trailing units in ACS
territory. Before taking charge of an engine in or approaching ACS
engineer must know that the cab signal devices are cut in and operative.
The engineer must
make a departure test if necessary.
Do not cut out cab signal devices while the train is
territory, unless authorized to do so.
13.2.2 Favorable to More Restrictive
When a cab signal changes to a more restrictive indication, the
engineer must comply
promptly with the indication received.
Acknowledging Restrictive Indication When a cab signal changes
to a more
restrictive indication, the engineer must acknowledge the change with the
device. On engines not equipped with the Coded Cab Signal-Safety Control
another member of the crew must immediately find out from the engineer why
whistle sounded longer than 6 seconds. When conditions require, the crew
member must stop
the train immediately.
On engines equipped with CCS-SC, the engineer must
acknowledge the change
within 6 seconds of receiving it to avoid a penalty brake application.
Penalty Brake Application Occurs
On engines equipped with CCS-SC, if the engineer does not acknowledge
restrictive indication, a full service penalty brake application will
within 6 to 8 seconds. When this occurs, the engineer must do the
- Place the automatic brake valve handle in suppression position and
leave it there until
the train stops.
- Place the throttle in idle position.
- Acknowledge the signal change with the acknowledging device.
- After the train has stopped and the P.C. light goes out, place the
automatic brake valve
handle in release position.
13.2.3 Elimination of Audible Indicator
To keep the audible indicator from sounding while the train is stopped
in a cab signal
test loop, place the reverser handle in either the neutral or reverse
position. This will
change the cab signal to its most restrictive aspect. After acknowledging
change, no more signal changes will be received.
Place the reverser handle in the forward position to
the equipment to normal operation.
Since the reverser handle in trailing units is in neutral
audible indicator is automatically silenced on trailing units.
13.3.3 Movement with an Inoperative Cab Signal Device
When it is determined the cab signal device is inoperative, the train
according to block signal indications. However, the train must not exceed
40 MPH until it
reaches a point where a crew member can report the defect to the train
The train dispatcher will:
- Instruct the crew to cut out the cab signal device.
- Establish an absolute block in advance of the train.
When the cab signal device has been cut out, the train must:
- Proceed according to block signal indications, but it cannot exceed
79 MPH and must go
slower if rules or conditions require.
- Comply with Rule 11.2 (Signal Indications with Absolute Block).