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New Technology Signals Program Project update to APTA June 13, 1995 T. J. Sullivan Director, New Technology Signals Divi

New Technology Signals Program Project update to APTA June 13, 1995 T. J. Sullivan Director, New Technology Signals Division of Electrical Systems. New Technology Signals Program. Program background Consultant Study Procurement and Schedule. Existing NYC Transit Signal Systems.

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New Technology Signals Program Project update to APTA June 13, 1995 T. J. Sullivan Director, New Technology Signals Divi

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  1. New Technology Signals Program Project update to APTA June 13, 1995 T. J. SullivanDirector, New Technology Signals Division of Electrical Systems

  2. New Technology Signals Program • Program background • Consultant Study • Procurement and Schedule

  3. Existing NYC Transit Signal Systems • 124,000 Vital Relays • 10,900 Wayside Signals • 1,400 Track Switches • 740 Miles of Signal Equipment • 200 Interlockings • 24 Master Towers • Some systems are over 70 years old MTA New York City Transit signal contracts and purchases represent 50% of the US signal equipment marketplace.

  4. Program Background • 1988 Initial NYCTA investigations • 1986 Vancouver SkyTrain sub-60 second headways • Research showed likely cost & operational benefits • 1991 Catastrophic 14th Street Accident • PTSB: Signal System operated as designed • PTSB: Investigate the feasibility of Installing a “State of the Art” Signal System • PTSB: Remove opportunities for human error • 1992 Pilot Installation for Staten Island Ry

  5. Changed to a Signal Study • Perform a world-wide Investigation • Recommend a Technology • Identify Maintenance issues and needs • Develop an Implementation Plan

  6. Peer Review * Consultant’s Signal Study * * Peer Review NTP Task 1 Recommend a Technology Other Tasks Identify SupportIssues Additional Tasks Range Estimating and additional study * M A M J J A S O N D J F M A M J J A S O N D J F M 93 94 * Requested by MTA/OK

  7. Europe, South America, Far East • London Underground • London Docklands Light Rail • Paris Metro (RATP) • Stockholm Transit • Sao Paulo, Brazil (METRO) • Hong Kong (MTRC)

  8. North America • Vancouver (BCRTC) SkyTrain • Toronto Transit (TTC) • San Francisco Bay Area Rapid Transit • San Francisco Municipal Railway • South Eastern Pennsylvania Transit Authority • Washington, D.C. (WMATA) • Los Angeles County MTA

  9. Two Basic Technologies • Traditional Fixed-block Technology • One-way communication from wayside to train • Physical blocks define train detection resolution • Modern Communications-based Technology • Two-way continuous vital communications between trains and the control center • No physical blocks (Software replaces Hardware) • Also know as “moving block” technology

  10. Fixed-Block Train Control William Robinson -1872

  11. Assumed Position of Train A Train A Train B Traditional Technology(Fixed Block) • Train control and position information is poor • Expensive to install, maintain, and modify • Not practical to make “Fault Tolerant” BLOCK 3 BLOCK 2 BLOCK 1

  12. NYCT Fixed-block Signal Systems • Track side equipment accounts for most of costs • Installation costs are increasing • Track access time is limited • Track side equipment accounts for most failures • Approximately 1,000 signal maintainers • System is “Fail Safe” ==> “Fail Stop” • Mean Time Between Failures is 10 hours

  13. C = B log2 ( 1+ S/N) Communications-based Train Control If the information rate of a message source is less than the channel capacity then the message can be transmitted without error. Claude Shannon - 1952

  14. R = Digital Radio C = Computer R C R C Modern “CBS” Technology(Communications-based Signalling) Computer C C • Permits maximum use of infrastructure & vehicles • Few mechanical adjustments means less maintenance • Improved safety yet it is totally and inherently flexible • Inexpensive micro-computers permit “Fault Tolerant” • Overall Finding: Better and Cheaper R C

  15. Alcatel Other Planned, supplier not yet selected Cities with, installing or planning Communications-based Train Control

  16. Next Generation Trainslikely 4-5 car consists • Additional passenger space in non-end cars • Increased reliability by eliminating electric couplers • Shared equipment among cars reduces maintenance • On-board vehicle train control equipment required

  17. R C C R Coordinate Car Specifications with Train Control Specifications • Make provisions for train control equipment • Specify car/train control system interfaces • Synergy by integrating subsystems • Reduced overall system costs

  18. R C C R Vehicle Train Control Equipment • Factory equip cars whenever possible • Consist redundancy ensures high availability • Cost is approximately 4 % per car $150,000 $150,000

  19. R C R C Train and Wayside Train Control COMPUTER A

  20. R C R C Full System Redundancy B COMPUTER A • “Fail Operational” rather than “Fail Stop” • Maintenance can be better managed • Enhanced Safety and Reduced Operating Costs

  21. Technology Limit Cost Communications-based Fixed Block Performance Technology Costs and Benefits Compared

  22. Technology Limit Cost Communications-based Fixed Block Performance Technology Costs and Benefits Compared

  23. Technology Limit Cost Communications-based Fixed Block Performance Technology Costs and Benefits Compared

  24. Communications Based Signalling Summary of Findings • Technology is both better and cheaper • NYC Transit’s Steering Committee concurs • Two International Peer Reviews agreed • MTA’s Independent Engineer agreed

  25. Procurement Issues • Presently, all CBS systems are incompatible • NYCT will develop “RFP” performance specifications that will ensure multiple sources of compatible equipment • Worldwide, the Signal Industry understands, agrees, and is beginning to respond

  26. Procurement Process SHORTLIST 2-3 RFP

  27. Procurement Process PossibleAlliances SHORTLIST 2-3 RFP

  28. Procurement Process PossibleAlliances A Comprehensive Demonstration Test B SHORTLIST 2-3 RFP

  29. Procurement Process PossibleAlliances A Install Pilot Line Comprehensive Demonstration Test B SHORTLIST 2-3 RFP

  30. FORM, FIT FUNCTION SPECS FORM, FIT FUNCTION SPECS FORM, FIT FUNCTION SPECS FORM, FIT FUNCTION SPECS Procurement Process PossibleAlliances A Install Pilot Line Comprehensive Demonstration Test B SHORTLIST 2-3 RFP SELECT NYCT STANDARD

  31. FORM, FIT FUNCTION SPECS FORM, FIT FUNCTION SPECS FORM, FIT FUNCTION SPECS FORM, FIT FUNCTION SPECS Procurement Process PossibleAlliances A Install Pilot Line Minimum Two Compatible Sources B PROCURE ALTERNATE SOURCE SHORTLIST 2-3 RFP SELECT NYCT STANDARD

  32. Implementation Schedule (Canarsie) • Study - Complete • Radio Propagation Testing - On-going • Consultant Work Scope - Nearly completed • Schedule for Canarsie • 2/96 Award Consultant Contract • 2/98 Start Test Phase • 2/99 Start Construction (A Contractor) • 2/01 Start Construction (Alternate Source) • 2/03 Beneficial Use

  33. On-Line BBS & Internet • BBS: (212) 492-8069 • Electronic Mail • Download Files • 1.2/2.4/9.6/14.4/28.8 kbps: 8N1 ANSI • Internet Access • “@nyct.mta.nyc.ny.us” • tom.sullivan@nyct.mta.nyc.ny.us • Web Page/ World Wide Web - TBD

  34. Questions and Discussion

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