Not reliable...

I was heading to Oak Grove the first time I tried this app (the day after the blizzard) and as I was getting out of my car it said my train was leaving in 2mins with another 8mins away. As I was walking toward the station I heard the buzzer. I missed the 1st train, but no biggie, another train is right behind this one. Nope, I had to wait over 10mins for the next train. Frustrating...

Orange line rider about ProximiT: MBTA Boston Transit