The crossing is a device provided at the intersection of two running rails to permit the wheel flanges, moving along one to pass across the other.

Component Parts of a Crossing:
  • A Vee piece
  • A point rail
  • A splice rail
  • Two check rails
  • Two wing rails
  • Heel blocks at throat, nose, and heel of crossing
  • Chairs at crossing, at toe and at heel
  • Crossing assembly should be rigid enough to withstand severe vibrations.
  • Wing rails and nose crossing should be able to resist heavy wear due to movement of wheels, hence should be manufactured of special steel(alloy steel)
  • The nose of crossing should have adequate thickness to take all stresses acting on the crossing.