Disability advocates seek to bring the Metropolitan Transportation Authority to task over what they claim is a systemic failure to build required accessibility features into rehabilitated stations.

Advocates filed the class action suit in the Southern District of New York on Wednesday, following a significant legal win for many of the same groups in March. In that decision granting partial summary judgment for the plaintiffs, U.S. District Judge Edgardo Ramos of the Southern District of New York found the agency was required under the Americans with Disabilities Act to include reasonable accessibility improvements when stations were being redone, regardless of the cost, and should have done so during a rehabilitation project in the Bronx.

Following the partial summary judgment order, the suit has moved towards discovery, with expert reports and exhibitions scheduled through the end of July.