(AP) San Francisco's Bay Area Rapid Transit is cautioning riders that the trains may not run Monday after two of the agency's largest union walked away from the bargaining table hours before a midnight deadline.
Calls to the union representatives were not immediately returned late Sunday.
BART spokesman Rick Rice said in a statement that while the agency has not received official word from the unions about a strike, BART must caution riders that a strike may begin soon.
He said all parties reached agreements on several issues Sunday in an 11th hour attempt to avoid a possible strike. He urged the unions to "use that momentum to reach a deal."
A strike would cripple the region's Monday morning commute. Transportation officials say another 60,000 vehicles could be on the road, clogging highways and bridges throughout the Bay Area.