The system became operational . Automation was achieved with the R143s assigned exclusively to the L, but since the R160As were not CBTC-compatible until August 2010, some trains were manually operated alongside automatically driven trains. The L fully began automatic train operation in early 2012. The CBTC installation increased the train capacity on the line from 20 trains per hour (tph) to 24 tph, as well as permitted the installation of countdown clocks, which show the amount of time until the next train arrives.