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State Interlocking


  • Image: Example of an Interlocking
  • Interlockings allow trains to “change lanes” to access stations or pass slower trains. Old interlockings require trains to slow down significantly to change tracks, adding to overall travel time.
  • The State Interlocking at Harrisburg is being rebuilt to allow trains to safely change tracks 20 mph faster than currently possible.
  • Project will increase on-time performance, improve service reliability, and decrease trip times.
  • Construction underway; completion slated for December 2017.