Rail ridership in Indonesia has risen substantially in recent years, making decades of underinvestment and growing urban congestion important considerations for transport stakeholders as they upgrade and construct new lines. Statistics Indonesia (BPS) reports that total rail passengers rose from 199.3m in 2011 to 202.2m in 2012, 216m in 2013, 277.5m in 2014 and 325.9m in 2015...