Public consultations begin Tuesday at 4:00 p.m. for Stage 2 ION.
It's the first of three public consultations that are running until Thursday.
Stage 2 ION's preferred route would connect Fairway Station in Kitchener to Ainslie Station in Cambridge through Preston.
Tuesday's consultation will take place at Preston Memorial Auditorium and runs until 8:00 p.m.
Wednesday's takes place from 4:00 p.m. - 8:00 p.m. at Sunbridge Hotel and Conference Centre in Kitchener.
Finally, Thursday's meeting takes place from 2:00 p.m. - 8:00 p.m. at Cambridge City Hall.