Sometimes extreme congestion of commuter trains becomes a problem. For example, an estimated million passengers ride every day on Yamanote Line in Tokyo , Japan, with its 29 stations. For comparison, the New York City Subway carries million passengers per day on 25 services serving 472 stations. To cope with large traffic, special cars in which the bench seats fold up to provide standing room only during the morning rush hour (until 10 .) are operated in Tokyo ( E231 series train). In the past this train has included 2 cars with six doors on each side to shorten the time for passengers to get on and off at station.
Controversy first arose when the French-owned and Montgomery County, Maryland -based Keolis (already operating Virginia Railway Express trains) was the only bidder for the contract. The bidding process was suspended in the fall of 2010 due to lack of competition. Before bidding reopened in 2011, Maryland passed a law (at the request of Leo Bretholz and other Holocaust survivors) requiring Keolis's majority owner, SNCF (currently solely owned by the French government)  to fully disclose its role in transporting Jews to concentration camps during World War II (while SNCF was under control of the Nazi government), to the satisfaction of the Maryland state archivist, before Keolis would be allowed to place a bid for MARC service. Keolis faced similar issues while bidding for VRE operations in 2009, but in the end, they were allowed to run VRE.