Onboard Rolling Stock ATC Functionality Clause Samples
Onboard Rolling Stock ATC Functionality. 1. Automatic Train Operation shall be provided to comply with the requirements of Grade of Automation Level 2 (GoA2) and shall demonstrate an upgrade path to GoA3.
2. The on-board ATC shall perform the following functions, as a minimum:
a. Real-time communication of information to the locomotive engineer of ATC System commands, status and alarms;
b. Correct selection and implementation of the ATC mode of operation;
c. Ensure safe speed enforcement over the complete train length including allowance for position uncertainty;
d. Train speed shall be displayed to the locomotive engineer rounded up to the nearest integer;
e. There shall be no discrepancy between the speed shown to the locomotive engineer and the speed used for supervision of Movement Authority and speed limits functions;
f. Allow safe Rolling Stock door operation;
g. Ensure the on-board databases are correct and up-to-date – correct modification with temporary limits transmitted from the wayside, and update the on-board database when permanent updates are transmitted from the wayside;
h. Monitor ATC and train equipment health status and report to OCC/LCCs as needed; including interfacing to on-board non-ATC subsystems to transmit health data to the wayside and OCC/LCCs;
i. Provide degraded mode of operations when selected by external input;
j. Record data for regulatory purposes; and
k. The ATC System shall not allow the Train to roll back by more than 2 m (6.6 ft) in all ATC supervision modes.