Capacity Analysis and Train Control Design

Working with the firm’s Systems Engineering practice, LTK’s Rail Operations Analysts are recognized experts in the critical block layout and control line design phase of train control design, producing layouts for new systems and extensions that satisfy the operational requirements of a rail network while minimizing capital cost.  These layouts can support a variety of train control architectures, including:

  • Wayside signaling with control line overlaps and mechanical trip stops
  • Wayside signaling with control line overlaps and inductive trip stops
  • Wayside signaling without overlaps or trip stops
  • Wayside signaling with cab signal overlay
  • Cab signaling with wayside signals only at interlockings
  • Wayside signaling with Positive Train Control (PTC) overlay
  • Communications Based Train Control (CBTC)

For existing signal systems, LTK Rail Operations Analysts can quantify practical capacity in terms of trains per hour and passengers per hour and also determine the maximum speeds supported by the existing system at each location on the network.  Where capacity “pinch points” or substandard provided braking distances exist in existing systems, we can develop cost-effective solutions on a localized basis.  When new vehicles are proposed, we use LTK’s software tools to determine their effect on system capacity, as acceleration profiles, braking rates and/or dwell times may change with a new fleet.


LTK Clients & Projects

NJ Transit

Middle Zone EMU Train Performance /
Signal Capacity Analysis

Denton County Transportation Authority (DCTA)

DMU's - Operations - Signals - Maintenance Facility

Minnesota Department of Transportation (MinnDOT)

Northstar Corridor Project