08-10-2017, 11:33 AM
(08-09-2017, 10:04 PM)tomh009 Wrote: How would this get missed? What does the signal house actually do, and why did they need to add it? Does it house the signals? Or something else?
From what I understand, the signal houses relay track information to/from the main operation office to all switches, sensors, and signals within its range of influence. This allows the operation team to monitor where the trains are and ensure switches and signals trigger at the appropriate time. They vary in size and complexity based on the number of devices in the network that need to be controlled/monitored by each signal house. Interestingly they have a limited range of 250m so they are spaced quite close to capture all the devices in the network. However, due to their limited range, if one signal house is out of commission then that section of the network is shutdown until repaired. The much larger TPSS (Traction Power Substations) can handle the loss of one station and the adjacent TPSS's can continue to power the network. If two adjacent TPSS are out of commission then that section of the network is shutdown.