NJ Transit and an engineers’ union appear to be steaming ahead to the first major rail strike in decades starting early Friday, even as both sides convene in Washington, D.C., where they pledged to continue negotiations.

Shakira fans attending the “Hips Don’t Lie” singer’s upcoming performances at MetLife stadium shouldn’t rely on NJ Transit for transportation.

NJ Transit is already preparing for the walkout by urging as many people as possible to start working from home.

If the engineers do walk off the job, the agency plans to increase bus service, saying it would add “very limited” capacity to existing New York commuter bus routes in close proximity to rail stations and will contract with private carriers to operate bus service from key regional park-and-ride locations during weekday peak periods.

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.

Shakira’s taking over MetLife for two nights next week — and tickets are vanishing fast. Especially for the Thursday night, May 15 show, the first of two nights for Shak's Las Mujeres Ya No Lloran World Tour in New Jersey.