Caltrain Stops At Railroad Crossing?!?

Bonus Video!!! Caltrain #622 to Tamien stopped at railroad crossing at 16th Street blocking all traffic for five minutes! I don’t know why this happened feel free to comment what you think happened! 0:00 Railroad Crossing Bars Go Down 1:25 Train Slowly Approaches 2:14 Train Stops At Crossing 4:28 Engineer Helps Guide Train Across 5:32 Train Finally Passes Crossing