I tried the 2007 layout yesterday under exam conditions. Looking through my attempt afterwards has left me confused with terminal platforms (station F) at the end of the single line. I had decide to signal using OTW without staff for this line, in hind sight this may have been pointless as track circuits were require for the AHBC I provided at Grade and a non-blocking signal on the return to protect the crossing.
Back to the terminal, if we have a buffer stop with red lamps then we need a distant which cannot display better than caution. My first thought was a distant board but is there a 20mph/32kmh speed limit to using these, GK/RT0032. However if this wasn't at the end of a single line, then for a terminal station or bay line I would expect MAR/delayed yellow, the buffer stop having no overlap would require the train nearly at a stand before any release of aspect.
GK/RT0051 doesn't mention any speed limits for OTW. As it is a budget system would we expect a speed limit, 20mph or less, near the terminus and a fixed distant board up to the buffer stop?
I'm not even going to consider how TPWS failure or TC interrupter on the buffer stop return to the protecting signal or box indication. The budget is blown!
Mark
Back to the terminal, if we have a buffer stop with red lamps then we need a distant which cannot display better than caution. My first thought was a distant board but is there a 20mph/32kmh speed limit to using these, GK/RT0032. However if this wasn't at the end of a single line, then for a terminal station or bay line I would expect MAR/delayed yellow, the buffer stop having no overlap would require the train nearly at a stand before any release of aspect.
GK/RT0051 doesn't mention any speed limits for OTW. As it is a budget system would we expect a speed limit, 20mph or less, near the terminus and a fixed distant board up to the buffer stop?
I'm not even going to consider how TPWS failure or TC interrupter on the buffer stop return to the protecting signal or box indication. The budget is blown!
Mark