I live near the beginning of the main line, Davis MP 0.0. As trains approach I hear a single tone over the main road channel. I'm wondering if this is the DED at MP 14.8? I also occasionally hear a a recorded voice stating the switch position and wonder if this is for Delpro Yard. A southbound just passed Reybold Road and I hear 2 tones. Can anyone provide some wayside info please? Thanks
