Valley Link is a plan to utilize diesel multiple units or electric multiple units along the former First Transcontinental Railroad right-of-way through the Altamont Pass and in the Interstate 580 median through the city of Livermore. Trains would initially run from River Islands at Lathrop to the Dublin/Pleasanton BART station with stops in the Tracy area and potential transfer stations with ACE at Greenville Road in Livermore and North Lathrop. Weekday service would connect to every other BART train at Dublin/Pleasanton.