Employers in the Philadelphia area are making contingency plans as the region braces for a potential strike that would shut down the regional rail system.
Unions representing about 400 engineers and electricians are expected to resume talks Friday evening with the Southeastern Pennsylvania Transportation Authority.
The unions say they will walk off the job at 12:01 a.m. Saturday if they can't reach a deal. That would shut down 11 rail lines that serve about 60,000 weekday commuters.
Buses, trolleys and subways in the region would still run.
Thousands of hospital, airport and store workers in and around Philadelphia might be affected this weekend by a strike.
Philadelphia International Airport spokeswoman Victoria Lupica (lew-PEEK'-uh) says that airport managers are helping employees make contingency plans, including bus options and carpools.