March 2019 - Railway Signalling Concepts

Railway Junction Signalling and Robust Train Protection

March 29, 2019April 1, 2019 adminLeave a Comment

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 […]

CONSTRAINTS ON POSITIONING OF STOP SIGNALS

March 19, 2019 adminLeave a Comment

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 […]

PROVISION OF LINESIDE SIGNALS

March 19, 2019 adminLeave a Comment

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 […]

Railway Signal Clearance RRI

March 18, 2019 adminLeave a Comment

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 […]

Railway Signals, Points and Tracks Indications

March 14, 2019March 14, 2019 adminLeave a Comment

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. […]

Railway Train Braking Concepts

March 13, 2019 adminLeave a Comment

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 […]