Switch Diamond Crossing

Railway Points and Track circuits 

Signalling a Track Layout,Railway Points and Track circuits,Normal lie of points,Siding points,Point Identity, Numbering,Overlaps,Alternate Overlaps,Warning Class,Replacement Joint,Berth Track,Other Factors,Fouling point and Clearance Point,Point Zone,Track circuit Interrupter,Switch Diamond Crossing,Maximum / Minimum Lengths,Train detection,Track section identity Railway Points and Track circuits  Points Normal lie points Points Numbering Track circuits Overlap Replacement Joint Berth track circuit Point Zone TC […]

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Overrun Protection

Railway Route Release Circuits      

Route Release Circuits,Approach/Route Locking – application ,Final Signal Control circuit,Locking of route (General), Comprehensive Approach Locking ,Control Table for TORR,Conditions for TORR to operate ,Train Operated Route Release (TORR), Section Route Release,Route locking released with time,Approach locking shown in Control table,2 Red rule locking Railway Route Release Circuits             Approach locking Release of approach locking as per […]

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Railway Junction Signalling and Robust Train Protection

Railway Junction Signalling and Robust Train Protection

Signalling Principles, Railway Junction Signalling and Robust Train Protection, IMPROVED JUNCTION SIGNALLING, ROBUST TRAIN PROTECTION,Junction Signalling,Main Aspect Free: (MAF),Approach Release from Yellow: (MAY-YY),Splitting Distants: (MAF-SD),Splitting Distants, Approach Release from Yellow with Flashing Aspects: (MAY-FA),Approach Release from Red: (MAR),Future of Junction Signalling,Preliminary Route Indicators and Dynamic Speed Indicators, Robust Train Protection = RTP,TPWS,Double Reds ,Double Reds – Emergency Brake […]

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Constraints on Positioning of Stop Signals

CONSTRAINTS ON POSITIONING OF STOP SIGNALS

Position of Signals relative to Hazardous Locations,Position of Signal relative to Platforms,Where practicable stop signal shall be so placed,Overhead Electrification Systems,Conductor Rail Electrification Systems,Overhead Electrification Systems,IDENTITY OF SIGNALS  Constraints on Positioning of Stop Signals 1.Position of Signals relative to Facing Points       Where a signal reads over facing points, it shall be positioned not more […]

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Facing Junctions

PROVISION OF LINESIDE SIGNALS

PROVISION OF STOP SIGNALS,PROVISION OF LINESIDE SIGNALS,Running lines,Sidings,Block Signalling,Facing Junctions,Level crossing,Lockout Systems,Lockout Systems, Signals at Point of Reversal PROVISION OF LINESIDE SIGNALS This document defines the mandatory requirements for the provision of lineside signals and the sequences in which signals aspects shall be presented to the drivers, in respect of plain line, diverging junctions and for […]

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Signaling layout

Railway Signal Clearance RRI

Railway Signal Clearance RRI,Signaling layout,Point free to operate,Route initiation circuit -1, Point initiation circuit,SIGNAL CONTROL CIRCUIT,Special controls,GSR circuit,Signal control circuit,Approach locking circuit-1,Route normalisation circuit – NR,Swinging Overlap,Auto controls,Two red rule Railway Signal Clearance RRI Signaling layout Point free to operate     Route setting 1. First button pressed is recognized as entrance button and the second […]

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POINT INDICATIONS ON TRACK

Railway Signals, Points and Tracks Indications

Railway Signals, Points and Tracks Indications Indications can be either visual or audible. Indications shall be provided to: Know the status of all equipment under his control. This includes detection of train occupancy of the lines under his control. Where required duplicate indications can be provided at other than the signalers control panel for operational convenience. […]

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Average Gradient

Railway Train Braking Concepts

Railway Train Braking Concepts,Introduction to Train Braking,Braking Rates,Braking Technique,Theoretical and Practical Braking,Braking Distance Calculations,Braking Distance Curves,Composite B.D. Curves,Braking Tables,Selection of Applicable Braking Curves,Braking Distance Calculations,Effect of Gradient on Braking Railway Train Braking Concepts Introduction to Train Braking – 1 Initially braking was available only from locomotive and other vehicles on freight trains were unbraked. In […]

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Releasing Route Locking

Route Locking Circuit Railway Signalling 

Locking of Route,Route Locking Circuit Railway Signalling ,Type of Approach Locking, Approach locking are of two types, Release of approach locking can be initiated in two ways, ROUTE STICK RELAYS,Route Locking,Release of Route and Overlap Locking,USR Circuit,Overlap USR,Effect of dropping of USR relays,Releasing Route LockingTrack Occupied Timer, Track clear Timer Circuit Route Locking Circuit Railway Signalling  Locking of Route […]

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