SAN FRANCISCO (KRON) — KRON4 is taking an in-depth look at BART and the headache the system can cause for riders.

There is no question BART is an invaluable service for Bay Area commuters.

But one hiccup can lead to systemwide delays, and that can happen several times in one week.

And as KRON4’s Philippe Djegal reports, it is taking a mental toll on some of its riders.

Watch the above video to see Philippe’s full in-depth report.