Testing on the Downtown Line Stage 2 began on 25 October 2015 .
Rolling stock that was delivered to Gali Batu Depot have commenced service on Stage 1 starting on 21 October 2015 .
Testing on the Downtown Line Stage 2 began on 25 October 2015 and rolling stock that was delivered to Gali Batu Depot have commenced service on Stage 1 starting on 21 October 2015 .