NJ Transit engineers are preparing to walk off the job on Friday, which could affect 350,000 commuters in New Jersey and New York City.

Several transportation services are establishing workarounds in preparation for disruptions due to a potential NJ Transit strike, which could suspend service as early as 12:01 a.m. May 16.

NJ Transit and an engineers’ union appear to be heading toward a major rail strike that would start Friday — the first one in decades. Currently, both sides are in Washington, D.C. participating in mediation,