ocr: Figure ITrain stations ofBruner Each letter: represents a ram station, Line: segments represent single frucks tbar raus can trauerse: in eitber direction, ibough only one: direction at a time. Each, line segment takes: 15 manures to racerse, Iitially, tbereis one: tram: in each station, though mhere: AS room jor Heoi The timejor Dussengers to get onota tram IS: negligible compared totratel lime,