BASIC APPLICATION GUIDELINES & PROGRAMMING
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5-13
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
5.2.6 Out Of Service (OOS) Operations
WARNING
THE RAILROAD PROCEDURES GOVERNING HOW TO TAKE A
TRACK CIRCUIT OUT OF SERVICE SHALL BE FOLLOWED. THE
INSTRUCTIONS IN THIS SECTION MAY BE FOLLOWED ONLY IF
ALLOWED BY THE RAILROAD.
OUT OF SERVICE TRACKS WILL NOT RESPOND TO TRAIN
OPERATION. TAKE ALTERNATE MEANS TO WARN VEHICULAR
TRAFFIC, PEDESTRIANS, AND EMPLOYEES.
REQUIRED OPERATIONAL TESTS SHOULD BE PERFORMED IN
ACCORDANCE WITH RAILROAD PROCEDURES WHEN RESTORING
TRACKS TO SERVICE.
THE RAILROAD PROCEDURES FOR APPLYING TEMPORARY
JUMPERS MUST BE FOLLOWED WHEN ENERGIZING THE “OUT OF
SERVICE” INPUT(S).
INPUTS FOR “OUT OF SERVICE” SHOULD BE WIRED IN A
PERMANENT MANNER PER CIRCUIT PLANS.
DO NOT USE TEST TERMINALS OR SWITCHES THAT CAN VIBRATE
CLOSED TO ENERGIZE OOS INPUTS.
When a crossing is taken out of service, the crossing outputs remain energized (no crossing
activation). The receiver and island LEDs remain ON during train movements. The island is
ignored when the island is set OOS. Directional Stick Logic will not operate the crossing when
OOS. The Display shows OOS by highlighting the PSO receiver or island in blue as shown in
Figure 5-7
Figure 5-7 Display OOS Indication