The S-train system: Synchronized express & local trains for urban commuter rail systems. - Joong H. Chun; Rodney M. Anderson; Daehyun Paik (ITSC, 2011)

Spatiotemporally Adaptive Synchronized (SAS) express & local trains for urban commuter rail systems. - Joong H. Chun; Rodney M. Anderson; Daehyun Paik (ITSC, 2014)