The San Francisco Bay Area's main commuter train system and its unions have reached tentative agreement on a new contract, ending a crippling four-day strike.
Union officials announced the deal Monday night. It still requires approval from union members.
BART spokeswoman Alicia Trost says limited service will begin at 4 a.m. on all lines.
Trains will likely be running at full strength in time for the Tuesday afternoon commute.
BART is the nation's fifth-largest rail system, with an average weekday ridership of 400,000.
Workers walked off the job on Friday after talks broke down. Commuters endured jammed roadways and long lines for buses and ferries, as they looked for alternate ways around the region.