▁trains ▁in ▁to ▁Chicago ▁of ▁which ▁ 2 2 ▁start ▁at ▁J ol iet . ▁The ▁remaining ▁ 1 2 ▁start ▁at ▁Blue ▁Island - V erm ont ▁Street . ▁Week end ▁express ▁trains ▁run ▁through ▁to ▁J ol iet , ▁while ▁week end ▁local ▁trains ▁make ▁a ▁short ▁run ▁to ▁Blue ▁Island . ▁A ▁few ▁loc als ▁however , ▁run ▁down ▁to ▁J ol iet . ▁ ▁The ▁Rock ▁Island ▁District ▁consists ▁of ▁the ▁former ▁Rock ▁Island ▁main ▁line ▁to ▁J ol iet ▁and ▁the ▁slightly ▁longer ▁Sub urban ▁Line ▁that ▁loops ▁to ▁the ▁west ▁between ▁G res ham ▁and ▁Blue ▁Island . ▁Most ▁trains ▁use ▁the ▁latter ; ▁the ▁two ▁stations ▁on ▁that ▁part ▁of ▁the ▁main ▁line ▁are ▁served ▁only ▁during ▁r ush ▁hour ▁and ▁during ▁week end ▁express ▁operations . ▁ ▁In ▁June ▁ 2 0 1 5 , ▁Met ra ▁began ▁week end ▁express ▁service ▁on ▁the ▁Rock ▁Island ▁District . ▁The ▁six ▁express ▁trains ▁that ▁operate ▁on ▁both ▁Saturday ▁and ▁Sunday ▁run ▁express ▁from ▁ 3 5 th ▁Street ▁to ▁Blue ▁Island - V erm ont ▁Street ▁before ▁making ▁all ▁stops ▁to ▁J ol iet , ▁by pass ing ▁the ▁entire ▁B ever ly ▁branch . ▁Local ▁trains ▁run ▁as ▁well , ▁making ▁all ▁stops ▁on ▁the ▁B ever ly ▁branch ▁and ▁termin ating ▁at ▁Blue ▁Island - V erm ont ▁Street . ▁This ▁cut s ▁about ▁ 2 0 ▁minutes ▁off ▁the ▁tri ps ▁from ▁Blue ▁Island ▁to ▁dow nt own . ▁On ▁August ▁ 2