Caltrain personel getting worried that since contractors are same for signals as Denver that it could be in same trouble as Denver RTD.
http://caltrain-hsr.blogspot.com/2018/12/grade-crossing-trouble-ahead.html
Hopefully, the contractor will choose a different equipment supplier. Also, the specifications may required equipment with some history of success.
There’s this little thing called infrared…take a page out of model railroading, or the same system they use to determine red light runners…a simple infrared detector,but no, we have to make it as complicated as a nuclear air craft carrier.
Is the problem with the audiotone overlay systems harmonics from the 60 cycle propulsion system? Can they mot be filtered to a level that the signal system can coexist with?