19-09-2018, 06:00 PM
REMBrum,
Looks like a good answer to me. Just a few thoughts (not sure I'm particularly qualified to comment, but there you go
):
1. Would suggest axle counters may be cheaper than TCs to install (no need for IRJs, track bonds, etc), some ACs clamp onto rails (depends on type).
2. You may want to caveat max/minimum track circuit distance, varies depending on type.
3. Another disadvantage of wireless comms - some active trackside transponders require battery changes.
4. For wireless comms I guess loss of track-train comms is the obvious risk I didn't see covered. Classic mitigation is 'fallback' fixed block detection
Looks like a good answer to me. Just a few thoughts (not sure I'm particularly qualified to comment, but there you go
):1. Would suggest axle counters may be cheaper than TCs to install (no need for IRJs, track bonds, etc), some ACs clamp onto rails (depends on type).
2. You may want to caveat max/minimum track circuit distance, varies depending on type.
3. Another disadvantage of wireless comms - some active trackside transponders require battery changes.
4. For wireless comms I guess loss of track-train comms is the obvious risk I didn't see covered. Classic mitigation is 'fallback' fixed block detection