Maplewood, which ordinarily runs jitney buses to and from the township’s NJ Transit rail station, announced that in the event of a strike buses will be re-rerouted to the South Orange station, which is offering Manhattan express bus service.

Supplemental chartered buses will begin running on Monday, but officials warned they can accommodate only about 20 percent of train riders.

NJ Transit trains screeched to a halt Friday amid a locomotive engineers’ strike, and a contingency plan for the 350,000 commuters that rely on the service won’t take effect until