Patent ID: 11866046
Assignee: nan
Field: Control (Instruments)
Classification: CPC B  G | IPC B  G

Claim 17:
18. A traffic control device (TCD), comprising:
a processing module, storage, a visual traffic control display (VTCD), one or more interfaces to one or more remote computer systems and to a camera-equipped device external to the TCD, and one or more connections coupling the processing module to the storage, the VTCD, and the one or more interfaces, wherein the processing module is configured to:
acquire one or more images of the VTCD during a diagnostic period, from the camera-equipped device external to the TCD;
obtain one or more expected states of the VTCD during the diagnostic period;
process the one or more images to identify one or more actual VTCD states of the VTCD during the diagnostic period;
compare the one or more actual VTCD states of the VTCD with the one or more expected states of the VTCD to determine whether a mismatch exists between contemporaneous actual and expected states of the VTCD; and
perform at least one action responsive to the mismatch, wherein the at least one action responsive to the mismatch includes transmission of a maintenance request to the one or more remote computer systems or adjustment of a state machine of the TCD to mitigate a malfunction indicated by the mismatch.