Railway signalling Solid State Interlocking (SSI)

Railway signalling Solid State Interlocking (SSI)

Railway signalling Solid State Interlocking (SSI) SSI Information Flow Classification of SSI SSI can be classified on the basis of –Type of Redundancy used Dual HW Dual HW with 100% stdby TMR SW redundancy –Whether Object Controllers are provided or not –Type of Data Programming used – Free wire or Geographical Object Controllers   Types […]

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Interlocking System | Computer Based Interlocking (CBI)| Track Vacancy Detection|Signals| Point Machines

(i) Computer Based Interlocking (CBI) :- The entire line including turn back track, transfer track, sidings will be equipped with CBI system for operation of points and crossings and setting of routes. The setting of the route and clearing of the signals will be done by workstation, which can be either locally (at station) operated […]

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Metro Rail Continuous Automatic Train Control | Automatic Train Protection (ATP | Automatic Train Operation (ATO) | Automatic Train Supervision (ATS)

Automatic Train Control | Automatic Train Protection(ATP | Automatic Train Operation (ATO) | Automatic Train Supervision (ATS)

Continuous Automatic Train Control :- Continuous Automatic Train Control based on CBTC will consist of – ATP (Automatic Train Protection), ATO (Automatic Train Operation) and ATS (Automatic Train Supervision) sub-systems: Automatic Train Protection (ATP) :- Automatic Train Protection is the primary function of the train control systems. This sub- system will be inherently capable of achieving the […]

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Metro Rail Signalling And Train Control 

Metro Rail Signalling And Train Control 

Metro Rail Signalling And Train Control :-   Metro carries large number of passengers at a very close headway requiring a very high level of safety enforcement and reliability. At the same time heavy investment in infrastructure and rolling stock necessitates optimization of its capacity to provide the best services to the public. These requirements of […]

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Coded Track Circuits | D.C. Coded Track Circuits

Coded Track Circuits • D.C. Relay Coded Track Circuits • Solid-State Coded Track Circuits – Electrocode – Microtrax D.C. Coded Track Circuits • Transmitter – Sends a coded D.C. voltage (Square Wave) • Receiver – Decodes signal • Dependent on the code rate, receiver will : – Pick the appropriate track relay repeater – Display […]

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Introduction to Centralized Traffic Control

Introduction to Centralized Traffic Control

Centralized Traffic Control  * Traffic control system (TCS) or centralized traffic control (CTC) is a block system under which train movements are authorized by block signals whose indications supersede the superiority of trains for both opposing and following movements on the same track. FRA 236.828 * Signal control – train movements are controlled by signal […]

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Metro Rail Provision of Signals Working of Signals and points 

Metro Rail Design of Electric Installations

Metro Rail Design of Electric Installations – (1) The design of all electric installations, namely transmission and distribution lines, sub-stations, switching station, rigid overhead current collection system, regulated overhead equipment, third rail DC Traction System etc. as applicable, shall be according to approved standards laid down by the Central Government and the Central Electricity Authority […]

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Commissioner Contents of report | Documents accompanying inspection report | Submission of report to Central Government

Metro Rail Signalling and train control system Installation 

Metro Rail Signalling and train control system Installation  Signals – (1) The signals to be provided for controlling the movements of trains on metro railway shall be, – (a) Cab signals. (b) Fixed line-side signals (where provided). and (c) Hand signals for shunting purposes. (2) The signalling and train control system shall be Continuous Automatic […]

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