In 2017, Metro-North started its West of Hudson Regional Transit Access Study to evaluate possible improvements in the Port Jervis Line service. An open house presentation took place on February 15, 2017. $150 million in improvements will be made from 2017 to 2023. As part of the study, three possible sites for a midpoint yard were evaluated: Harriman, Salisbury–Mills, Campbell Hall. The Campbell Hall site was chosen as it has the least potential to block the line if a train breaks down, because of its lower cost, and because it advances an operating plan to have inner service on the line run from Middletown. In addition, three passing sidings would be added near the Tuxedo, Salisbury Mills, and Middletown stations. The sidings and the yard would allow for increased service on the line, from the current 27 trains a day to as many as 44. Trains between Port Jervis and Middletown would be increased by one to 26; trains between Middletown and Campbell Hall would be increased from 27 to 37, and trains between Campbell Hall to Hoboken would be increased to 44. The midpoint yard and passing sidings would be open in 2023.