NJ Transit locomotive engineers could soon walk off the job, bringing to a halt a rail service used by 350,000 commuters in the event of a work stoppage. As of Thursday morning, the Brotherhood of Locomotive Engineers and Trainmen union and NJ Transit representatives were still meeting in negotiations hoping to reach an agreement prior to a potential strike.

As late as Wednesday night, the two sides were expressing some optimism for a settlement. Since then, radio silence.

NJ Transit’s bus routes, the agency’s predominate lines in the region, would not be impacted. But rail lines would.

Beyonce fans might be better off riding a horse to next week’s “Cowboy Carter” concerts at MetLife Stadium if a strike shuts down NJ Transit rail service. NJ Transit’s train engineers could walk off the job as soon as Friday after Brotherhood of Locomotive Engineers members voted to reject a tentative agreement between the leaders of the agency and the union.