About half of SLE trains operate to and from New London. New London SLE multi-ride pass holders are also allowed to board selected "Northeast Regional" trains, or Acela Express train #2151. There are plans to increase the service to New London, which is limited by U.S. Coast Guard requirements regarding the bridge crossing the Connecticut River. After years with just one or two trains to New London, additional New London round trips were added in 2010 and 2013, and weekend service began in June 2013.