Optimizing Construction Windows to Keep the Trains Rolling


At a Glance

  • Client(s)
  • Caltrain (Peninsula Joint Powers Board)
  • Project Location(s)
  • San Francisco
With burgeoning ridership, Caltrain is about to electrify its diesel commuter rail network to increase capacity, improve trip times and reduce emissions. 

The design-build electrification program requires significant mainline track outages in order to maximize contractor efficiency and control capital costs. At the same time, construction outages cannot degrade existing service levels or reliability.

LTK was selected by Caltrain to develop optimized construction work windows for its design-build electrification program.  LTK used its TrainOps® simulation software and train scheduling expertise to explore different construction work window possibilities.

LTK worked with Caltrain in the development of its Design-Build Electrification Contract Documents to treat the operational requirements of each weekday differently.  In general, Tuesdays and Wednesdays are devoted to non-electrification Caltrain maintenance while the other nights are available for contractor activity.

Caltrain’s initial strategy was to assume periodic schedule changes such that all segments of the Corridor could be accessed on weekends by the contractor. However, LTK worked with Caltrain to develop operating plans with scheduled meets at Control Points (supporting single track operation north or south of the Control Point), thereby supporting flexible contractor work locations without schedule changes. This approach minimized impacts to Caltrain’s customers while maximizing contractor efficiency.

LTK Capabilities Used on This Project