UNIT IV TRACK CONSTRUCTION. POINTS AND CROSSINGS Point and Crossings are peculiar arrangement used in permanent way to guide the vehicle for directional.

Slides:



Advertisements
Similar presentations
For Personal Use Only This presentation contains copyrighted material. PLEASE DO NOT COPY OR DUPLICATE. NOT FOR COMMERCIAL USE. For Personal Use Only This.
Advertisements

Signs, Signals, and Roadway Markings
Operations on the BDMRR Dispatching for the Birmingham District Model RR.
1 Track and Time to a Train Field Presentation 2 The following presentation is an example of Track and Time Authority to a Train. You will need a blank.
SCORT/TRB Rail Capacity Workshop - Jacksonville Florida1 1  A Primer on Capacity Principles  New Technologies  Public Sector Needs 22 September
M3 - 1 The Road to Skilled Driving April 2006 Chapter 2 Signs, Signals and Roadway Markings.
Unit 2 Learning the Basics
SSigns are defined by their function and are broken into three major groups: RRegulatory Signs give notice of traffic laws or regulations. WWarning.
Signal Basics. Signals: –Allow for safe operation of trains – protecting your train, other trains, and the equipment –Lets the railroad operate more efficiently.
Transportation Tuesday TRANSPORTATION TUESDAY REAR ENDERS – HOW CAN WE PREVENT THEM? A collision occurs when two vehicles occupy the same space!
CVE 312 TRANSPORTATION ENGINEERING. INTRODUCTION Teaching Approach & Grading Policy Course Outline  Introduction to Transportation Engineering  Modes.
Traffic Signals, Signs and Pavement Markings  are used for traffic control to provide a smooth, orderly flow of traffic Remember: Obey all signs and signals.
Materials developed by K. Watkins, J. LaMondia and C. Brakewood Rail Capacity Unit 3: Measuring & Maximizing Capacity.
Safe Driving Tips.
Location of Signals. Considerations for Location of Signals Braking Distance Overlaps Isolation Simultaneous Reception.
Guidelines for Traffic Control at Surface Mines
Signal Control Circuit
Ch. 7 – Parallel Parking NY State DMV.
CE 515 Railroad Engineering
Guidelines for Traffic Control at Surface Mines
UNIT I INTRODUCTION.
ABS(Antilock braking system)
Chapter 2 Signs, Signals, and Roadway Markings
CE 515 Railroad Engineering Communications & Signals Source: Armstrong Ch 7, AREMA Ch. 7 “Transportation exists to conquer space and time -”
Chapter 5: Intersections & Turns
DRIVER SAFETY.
Signs, signals, and pavements markings
2015 Traffic Signals 101 Topic 11 Emergency Vehicle Preemption (EVP) and Railroad (RR) Preemption.
1 Satisfiability Testing in the Railway Industry Simon Chadwick Head of Research Westinghouse Rail Systems Limited, Chippenham, UK SAT2009 Twelfth International.
1 Section III Day 2 DMV Manual p. 5-6, Write a scenario about how the driver of the white truck managed to keep his truck on the edge of the.
Signs, Signals and Pavement Markings
Drive Right chapter 2 Thursday, April 20, 2017 lesson 2.1
~Moving Charge Put to Use
Chapter 4. Your number one priority as a driver is to drive your vehicle carefully and safely. Your speed and manner of driving must create a safe environment.
INTRODUCTION 1 What word comes to your mind to describe “ The attempt by two objects to occupy the same space at the same moment in time”
Chapter 11. Expressways What is a "controlled access" highway? One that has a limited access where you can only enter & leave at interchanges.
Positive Train Control Labor Briefing Washington, DC December 10, 2008.
Corporate Health and Safety ArcelorMittal RS# 3 Work Environment Draft date: Oct 5, 2011 Rev 1.
Signs, Signals, and Roadway Markings
Driver’s Education Sharing The Road With Others #2.
Create a Detailed CTC Machine Model with JMRI/PanelPro Other Clinics in this series: Introduction to Layout Control with JMRI/PanelPro Repeated 4:00 PM,
ROLE OF SIGNALLING IN RAILWAYS
Intersections.
 SIGN, SIGNALS, & ROADWAY MARKINGS Do Now - Create a list with as many different road signs you are able to think of. What does each sign tell you? Classify.
AUTOMATIC RAILWAY GATE CONTROLLING AND TRACK SWITCHING
Understanding the Virginia Driver’s Manual
In practice, it is often required to make or break an electric al circuit in many operations. In some applications, it is desirable that this make and.
MECHANISED BALLAST CLEANING DYNAMIC TRACK STABILISATION & UNIMAT
Sample slides from the Drivers Edge: Strategies and Tactics Disc The following sample slides are from the first lesson. They are not as clear as what.
A new fail-safe principle for railway signaling
CE2303 Railway Engineering
Signs, Signals, and Roadway Markings Driver’s Education.
Lesson Plan For Day Two Power point presentation 30 min Video– AAA- signs, signals, etc. 20 min Quiz- Signs Etc 10 min Correct 10 min H/O- Signs 10 min.
Chapter 2 Signs, Signals, and Roadway Markings Start working on the Start working on the 8 questions on page 39! 8 questions on page 39!
CE2303 Railway Engineering
土木工程概论 Introduction to Civil Engineering 第五、六、七章 交通、桥梁与港口工程 Chapter 5 Transportation, Bridge and harbor Engineering.
Indian Railway.
Permanent Way.
Guide for the application of CSM design targets (CSM DT)
Drive Right Chapter 2 Unit 1
Emergency Vehicle Preemption (EVP) and Railroad (RR) Preemption
OVERVIEW: POSITIVE TRAIN CONTROL (ptc)
Performing Basic Vehicle Maneuvers
Signs and Symbols from Instant Art Traffic Signs CD-ROM
RAILWAYS, BRIDGES & TUNNELS
Signs, Signals and Roadway Markings
Alabama Driver Manual Chapter 3
Parking Driver Theory.
Drive Right chapter 2 Thursday, June 27, 2019 lesson 2.1 TRAFFIC SIGNS
Performing Basic Vehicle Maneuvers
Presentation transcript:

UNIT IV TRACK CONSTRUCTION

POINTS AND CROSSINGS Point and Crossings are peculiar arrangement used in permanent way to guide the vehicle for directional change. Broadly point andcrossing assembly consists of three maincomponents namely Point, Lead and Crossing element

. A point consists of one pair of tongue rails and Stock Rails with necessary fittings.Crossing is a device in the form of V- piece introduced in the track to permit movement of wheel flange at the inter section of two running lines.It has gap over which the wheel tread jumps.The track portion between point and crossing is is called lead.

TURNOUTS Turnouts are called left hand or right hand, depending on the side, to which the rolling stock gets diverted. Similarly tongue, wing and stock rails are called LH or RH depending on their position, looking in the facing direction of the points

SIGNALLING A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine driversrailway linetrain/engine drivers. The driver interprets the signal's indication and acts accordingly. Typically, a signal might inform the driver of the speed at which the train may safely proceed or it may instruct the driver to stop.

APPLICATION AND POSITIONING OF SIGNALS signals displayed simple stop/proceed indications. As traffic density increased, this proved to be too limiting and refinements were added. One such refinement was the addition of distant signals on the approach to stop signals. The distant signal gave the driver warning that he was approaching a signal which might require a stop. This allowed for an increase in speed, since trains no longer needed to be able to stop within sighting distance of the stop signal.

USES OF SIGNALS that the line ahead is clear or blocked. that the driver has permission to proceed. that points are set correctly. which way points are set. the speed the train may travel. the state of the next signal. that the train orders are to be picked up by the crewtrain orders

WHERE SIGNALS CAN BE PLACED at the start of a section of track.section on the approach to a movable item of infrastructure, such as points/switches or a swingbridge.swingbridge in advance of other signals. on the approach to a level crossing.level crossing at a switch or turnout. ahead of platforms or other places that trains are likely to be stopped. at train order stations.train order stations

INTERLOCKING In railway signalling, an interlocking is an arrangement of signal apparatus that prevents conflicting movements through an arrangement of tracks such as junctions or crossings. The signalling appliances and tracks are sometimes collectively referred to as an interlocking plant. An interlocking is designed so that it is impossible to give clear signals to trains unless the route to be used is proved to be safe.railway signallingtracks

INTERLOCKING TYPES Mechanical interlocking Electro-mechanical interlocking Relay interlocking Electronic interlocking

TRACK CIRCUITING A track circuit is a simple electrical device used to detect the absence of a train on rail tracks, used to inform signallers and control relevant signalstrainrail tracks

CONVENTIONAL AND MODERN METHODS the sole train operator on the line, parallel double tracks were built for trains traveling in opposite directions, timetables were established and a crude signaling system was established to prevent collisions. These methods of operation became standard on railways across the world.double trackssignaling This speeded up the transportation of coal to the sea as the River Tees there was deeper.River Tees Further upstream around Stockton-on-Tees shallow waters greatly hindered shipping.Stockton-on-Tees In 1834 a rival line, the Clarence Railway, was also built for the shipping of coal, this branched off from the Stockton and Darlington Railway at Shildon and terminated at Haverton Hill and Port Clarence on the opposite side of the river to Middlesbrough.ShildonHaverton HillPort Clarence

MATERIALS USED. BALLAST Track ballast forms the trackbed upon which railway sleepers (UK) or railroad ties (US) are laid.railroad ties *It is packed between, below, and around the ties. It is used to facilitate drainage of water, to distribute the load from the railroad ties, and also to keep down vegetation that might interfere with the track structure.drainagevegetation *This also serves to hold the track in place as the trains roll by. It is typically made of crushed stone, although ballast has sometimes consisted of other, less suitable materials. The term "ballast" comes from a nautical term for the stones used to stabilize a ship.crushed stoneballast