Can anyone come up with a list of interlockings that were equipped with equilateral turnouts? Did their installation choice have anything to do with approaching track geometry permitting higher speeds? I noticed they are not really identified graphically in any late era track charts. Did it have anything to do with certain sidings equipped with bracket mast signals (where both tracks featured a 'high mount' signal) as opposed to other sidings where there was a high mast for one track and a lower mast/dwarf for the other track? Batavia Int Mar 76 was clearly an equilateral.
Were all sidings bi-directional, or were there some that were operated like current-of-traffic signaled? Was their a difference in signal indications when entering a siding depending upon the switch type or bi-directional status? I saw a video clip of a train getting a red over flashing lunar to enter a siding (against the current) at a switch that was not an equilateral design. Were there different (upgraded) signal indications also possible depending upon track geometry? Rochester Jct Nov 71 shows snow topped rails on former WB while former EB has seen some traffic.
Were all sidings bi-directional, or were there some that were operated like current-of-traffic signaled? Was their a difference in signal indications when entering a siding depending upon the switch type or bi-directional status? I saw a video clip of a train getting a red over flashing lunar to enter a siding (against the current) at a switch that was not an equilateral design. Were there different (upgraded) signal indications also possible depending upon track geometry? Rochester Jct Nov 71 shows snow topped rails on former WB while former EB has seen some traffic.