Standards

Sections

• 236.401
  § 236.401 Automatic block signal system and interlocking standards applicable to traffic control systems.
• 236.402
  § 236.402 Signals controlled by track circuits and control operator.
• 236.403
  § 236.403 Signals at controlled point.
• 236.404
  § 236.404 Signals at adjacent control points.
• 236.405
  § 236.405 Track signaled for movements in both directions, change of direction of traffic.
• 236.406
  § 236.406 [Reserved]
• 236.407
  § 236.407 Approach or time locking; where required.
• 236.408
  § 236.408 Route locking.
• 236.409
  § 236.409 [Reserved]
• 236.410
  § 236.410 Locking, hand-operated switch; requirements.