But BART says this upgrade it will make for a smoother, more efficient and safer ride.
What do regular riders say? ABC7 News packed in with the crowd on a San Francisco-bound train at the West Oakland station to find out.
When asked if she noticed any different, BART rider Laura Isaacs responded, "No, not at the moment. You still get like that pop when you go into the tunnel on your ears. It doesn't sound as noisy but not really, no."
When asked if the ride was smoother, Isaacs responded, "It's not as bumpy. Sometimes you rock back and forth so, yeah, it does feel a little smoother."
Unfortunately, the new track can't make it cooler or less packed in the cars, which were common complaints we heard on the ride over.
But for these people, this still beats sitting in traffic on the Bay Bridge.
Oakland resident Heather Hood said, "We can take it. We're tough. We're Bay Areans."
There was also a major dust issue at the Embarcadero Station Tuesday morning, causing eye watering, coughing and scratchy throats.
BART officials say it's been cleared up and they have turned on their ventilation system.