initially developed by Rotem for Philadelphia's SEPTA Regional Rail in 2009, with RTD's order coming a year later in 2010. RTD's numbered 4001 through 4066, possess a number of differences from the ones operated by SEPTA, most notably the lack of low platform steps and full-width cabs. All trains operating on the commuter rail lines will be equipped with positive train control. Criticism Denver Union Station Design The Regional Transportation District (RTD) and Denver Union Station Project Authority (DUSPA) has received significant criticism for the redevelopment of the Denver Union Station. Many public transportation advocates and planning experts maintain that the project precludes impending access of high-speed rail technology and north–south passenger rail routes such as Front Range Rail, is designed to present logistical complications for both rail and bus commuters, lacks integration of bicycle facilities and an intercity bus station, and is being modeled to perform as a stub-end terminal for current and future intercity rail routes. Many citizens and public transportation advocates have also expressed frustration with the high cost associated with the project's design and its direct impact on the agency's ability to complete all rail lines that were a part of the original voter-approved FasTracks project proposal. In 2009 the Colorado Rail Passenger Association, a local rail transportation advocacy group, filed a lawsuit against the Federal Transportation Administration for its acceptance of DUSPA's Environmental Impact Statement, which suspiciously omitted several impactful statements and comments that were contributed by the members of the community. Eminent domain The Regional Transportation District have used eminent domain to condemn properties in the path of transportation projects. Several property owners have protested the taking of their properties for FasTracks lines. Federal Station relocation The Regional Transportation District proposed relocating the Gold Line Federal Station from the previously approved east side site to the west side of Federal Boulevard. Some residents opposed the move on the grounds that was only to benefit a developer who owned property near the west side site, and revitalization of the community would be better served by the east side location. RTD supported the move because the east side location was a former waste dump, and that the west side location would be more accessible for the community. On December 15, 2010, RTD announced that the Federal Station would remain on the east side of Federal and not be moved to the west side. The Adams County