High Quality Content by WIKIPEDIA articles! The Suburban Transit Access Route (or STAR Line) is a proposed railway project in northwest and outer suburban Chicago, Illinois, USA. On January 30, 2003, Metra announced plans to build a new service line that would introduce a new fleet of Diesel multiple unit trains (DMUs) to connect nearly 100 communities in the region and form Metra`s only suburb-to-suburb service. Currently all of Metra`s services are oriented on suburb-to-city travel.