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NEW YORK CITY TRANSIT’S Communications-Based Train Control Standard A Look at the Leader’s System Geoffrey P. Hubbs New York City Transit & Edwin A.

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Presentation on theme: "NEW YORK CITY TRANSIT’S Communications-Based Train Control Standard A Look at the Leader’s System Geoffrey P. Hubbs New York City Transit & Edwin A."— Presentation transcript:

1 NEW YORK CITY TRANSIT’S Communications-Based Train Control Standard A Look at the Leader’s System Geoffrey P. Hubbs New York City Transit & Edwin A. Mortlock Parsons Transportation Group April 5, 2000

2 NYCT’s CBTC Implementation
Background Implementation Strategy Interoperability Objectives The Proposed System Milestones Innovations Conclusions

3 Background

4 Background NYCT subway system is one of the world’s largest
Half of the signal system is more than 75 years old An extensive technology assessment conducted in the early 90s concluded CBTC is the best way forward for NYCT: 20 year implementation strategy A pilot system installation - Canarsie Line (L Line) Multiple sources of supply for the system

5 CBTC System Benefits Operational Safety RAM
Increase line capacity/minimise headways Permit greater flexibility and precision of control Safety Continuous ATP Protection of work crews RAM Redundancy and fault tolerance Remote diagnostics Reduction in trackside equipment

6 Implementation Strategy
System wide over a prolonged period (>20 years) Subway system is a highly complex set of interconnected lines Flexibility of operation between lines is of paramount importance Interoperability standards to permit flexibility at the same time as procuring from competitive sources are key to success

7 Pilot Project Procurement Strategy
Phase II, Install Pilot Line, Develop Interoperability Specifications One Lead Contractor Six Proposals Three Demonstrators Two Follower Contractors Phase III, Reengineer systems, demonstrate interoperability through test Advertise RFP Shortlist Three Select Lead (and standard)

8 Background The Canarsie L Line

9 Canarsie Line CBTC Pilot Objectives
A pilot project for future train control Establish new standards for future signal modernization based on CBTC technology, to allow future competitive procurement Establish NYCT procedures and working practices with new train control technology Resignal the Canarsie Line on schedule and with minimum disruption to revenue services

10 Interoperability Specifications
The establishment of a Standard for future CBTC procurements is based upon a requirement for future interoperability of separately procured CBTC subsystems The Leader’s Interoperability Interface Specification will become the key technical component of future CBTC procurement specifications

11 Interoperability Specifications
Draft interoperability specifications were submitted by each Proposer during the Phase I contract Further interoperability specification updates will be submitted by the Leader as Phase II progresses and leads into Phase III The future intent is for a black box approach to subsystems, i.e., new trackside CBTC procurements will be fully functional with adjacent CBTC systems provided by other suppliers

12 Interoperability Specifications
All suppliers’ car equipment will work with all suppliers’ wayside systems Carborne equipment can be supplied as part of future new car procurement (cars will be supplied CBTC equipped) The wayside systems will also interface fully with the ATS system

13 Interoperability Specifications
Interoperability does not mean interchangeability Future CBTC procurements will result in multiple spares holdings of both trackside and carborne equipment

14 Concept CBTC System Architecture
Carborne processors Transponders Data Radio Network Interlocking Interface Trackside Processors Position/Movement Authority

15 Concept CBTC System Architecture
Transponders Data Radio Network Interlocking Interface Trackside Processors Position/Movement Authority Maximum Line Speed Braking Profile Limit of Movement Authority

16 Reasons to Choose the Leader
Proven start up performance of the Meteor system in Paris Safety certification by independent agencies Superior availability, reliability, and maintainability Full support of mixed fleet operations Best understanding of interoperability objectives and requirements

17 Reasons to Choose the Leader
High ratings of software development capabilities Overall performance throughout the various components of Phase I

18 CBTC System Description
Operating Modes; In CBTC Territory trains will operate in: Automatic Train Operation ATO Automatic Train Protection Manual ATPM Auxiliary Wayside Protection AWP Yard Restricted Manual Bypass

19 CBTC System Description
Outside of CBTC territory CBTC equipped trains will operate in Wayside Signal Protection mode (WSP) Train Operators drive according to signal aspects Onboard CBTC is in a “dormant” mode looking for an entry indication to the next segment of CBTC territory

20 Proposed Matra System NYCT system is based on Paris Meteor Line with some key differences: Meteor is unmanned, NYCT will have Train Operators and Conductors Radio links between train and wayside instead of inductive loops Meteor was a green field start, NYCT involves major changes to existing rules and procedures Canarsie Line services must continue during CBTC construction, test and cutover

21 Proposed Matra System Zone controllers are independent of adjacent zones Vital computers are based on single processor platforms Zone controllers determine safe limits of travel (Movement Authority Limit - MAL) for each train MAL transmitted to trains via RF network Zone controllers interface to conventional relay based interlocking and wayside signal equipment (AWS)

22 Proposed Matra System Zones are divided into virtual blocks, sized to meet headway and junction operational performance Virtual block philosophy facilitates a mix of equipped and unequipped train operation through CBTC territory Passive transponders are mounted between the rails for position fixes Carborne equipment also uses a mix of tachometer and Doppler radar equipment for positioning

23 Proposed Matra System “Stand alone” ATS being provided for Canarsie will interface to other systems within a new Rail Control Center ATS remote workstations will also facilitate control of the L Line from strategic points on the line as well as providing real time maintenance data to signals and car maintenance “centers”

24 Proposed Matra System ATS will:
Track and display train locations, train and car identities, schedule information etc. Provide computer aided dispatching including automated routing, schedule adjustments through dwell and performance level control

25 Proposed Matra System An AWS subsystem is to be provided, integrated with the zone controller and ATS subsystems AWS provides home signals at interlockings and track circuits throughout as a minimum Some other wayside signals are being provided where relatively close headway of unequipped trains is needed

26 Proposed Matra System RF data network will provide two way continuous data communications between trains and wayside: 2.4 GHz Spread Spectrum transmission in the unlicensed ISM band Direct Sequence Spread Spectrum BPSK/DQPSK 2 Frequency channels allocated to every cell, all frames transmitted successively at both frequencies Radio is different to that used in Phase I test Matra has tested this system extensively in Paris Metro and elsewhere including NYCT

27 Proposed Matra System ZC1 ZC2 Wayside Network WTU1 WTU2 WTU3 RTU1.1
Cell 2 Cell 3 Cell 1 Hand-Over Area Control Zone 1 Control Zone 2 Control Zone Overlap

28 Matra Proposed Wayside Architecture
Station PA/CIS ATS Zone Controller AWS Radio Data Network Maintainer’s Panel Car Subsystems OBCU OBCU Car Subsystems Track Equipment Carborne Carborne Transponder Transponder

29 Matra Proposed Carborne Architecture
A Car B Car B Car A Car Radio Antenna Radio Antenna To Train Systems To Train Systems TO Display Interface/data com Equip TO Display OBCUs Unit Lines Train Lines Tachogenerators Transponder Interrogator Antenna Doppler Radar Units


31 R143 Cars R143 Cars are being delivered CBTC Ready

32 Contract Innovations Listen, listen, & listen Partnering
Between all parties, Contractor, Consultants, and NYCT Working Groups Established to cover critical topics and subsystems Led by the Systems Engineering Group, others have been formed to help the contractor develop the design in a no surprises atmosphere Co-located Teams

33 Key Milestones Award Phase II Contract Draft Interoperability Specs
Complete CBTC/R143 Interface Design Award Phase III Contracts Complete System Design Review Complete Preliminary Engineering 12/1999 3/2000 4/2000 7/2000 3/2001

34 Key Milestones Preliminary Interoperability Specs
Final Interoperability Specs Initial Shadow Mode Operation First Section of CBTC in Revenue Phases II and III Complete 4/2001 3/2003 10/2003 11/2003 12/2004

35 Canarsie CBTC Project Summary
Three years after design start, project is on original schedule Phase I demonstrations have helped to cement a strong partnering relationship between previously diverse NYCT departments The development of interoperable standards for New York and potentially other North American properties remains a key goal and a reality

36 Canarsie CBTC Project Summary
The Phase I test results indicate that the Contractor(s) and the selected technology can perform There is a very close watch on Canarsie by other US transit properties The industry wide standards resulting from this pilot project will be applicable to many of these properties

37 Questions and Answers? ?

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