Why does the new Roosevelt Ave QBL interlocking have some strange behavior with the signals?
Over the past year since it was installed in phases, I have seen (in no particular order
*Signals mid platform that stay red until a train is several blocks away, then show a brief ST (20 or 15 light), then turn yellow. This is if the home signal at the end of the platform is yellow over green or green over green. These mid platform signals are never green.
*Red home signals will still be preceded by the brief ST aspect, but this is usually if one train just pulled out and another is right behind waiting to enter
*Said station time aspects in mid station
*One shot timers for diverging movements. Why not have 2 shots or the newly installed ST?
*extremely close and bright signals. Looking out the RFW on an e/b express, sometimes its hard to tell the next signal especially with another train in front or 3 to 4 yellows ahead in a row
I havent noticed much of a reduction in speed on the QBL around there, save for the express during rush hour (they repositioned some signals and control lengths on the expressw/b at Elmhurst and e/b at 65th, this has caused more congestion around there), and am curious as to the rationale of putting in all this complex operation, especially with CBTC coming soon.