Since the rezoning of Brooklyn's 4th Avenue in 2005, many hundreds of residential units have been built and many hundreds more are being built or planned. This has increased the population along 4th Avenue by thousands of people, and thousands more are coming. The majority of this recent and new construction is along 4th Avenue between Atlantic Avenue/Barclay Center and 36th Street. The only subway line that makes stops in that section of 4th Avenue is the R train. As one waits for the R train on any of the four stops between 36th Street and Atlantic Avenue/Barclay Center, the D and N trains speed past on the express tracks. Many more frequent R trains are needed.