Question: does the r train stop at jay street

Answer: Yes, Jay Street--MetroTech is an underground station complex on the IND Fulton Street, IND Culver, and BMT Fourth Avenue Lines of the New York City Subway. The complex is located in the vicinity of MetroTech Center (near Jay and Willoughby Streets) in Downtown Brooklyn. It is served by the A, F and R trains at all times; the C train at all times except late nights; the N train during late nights only; and a few rush-hour W trips in the peak direction.