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Working Group #2 Report
IEEE Rail Transit Vehicle Interface
Standards Committee Meeting
March 14, 2000
March 14, 2000
RTVISC Meeting
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Current Status
 IEEE
Std. 1474.1-1999,
“CBTC Performance and Functional
Requirements”, issued in December, 1999
 WG2
meeting to discuss “next steps” held
on February 18, 2000 at SEPTA
March 14, 2000
RTVISC Meeting
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Meeting Attendees
 Consumers
17
(61%)
 Producers
5
(18%)
 Others
6
(21%)
28
(100%)
 TOTAL
March 14, 2000
RTVISC Meeting
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Process
 “Brainstorm”


potential new initiatives
Open items from IEEE Std. 1474.1-1999
Other proposals raised by WG2 members
 Discussion
 Establish

consensus
vote
March 14, 2000
RTVISC Meeting
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Recommendation #1
 Environmental
standard (incl. EMI/EMC)
for CBTC wayside equipment


100% of group voted on this item
100% of those that voted, voted “for”
– Recommendation is that WG8, or possibly a new WG, take on
this standard initiative
– (No chair currently identified for new WG)
March 14, 2000
RTVISC Meeting
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Recommendation #2
 Graphical
user interface display standard for
trainborne and central CBTC subsystems


78% of group voted on this item
95% of those that voted, voted “for”
– Emphasis would be on defining information to be provided by
CBTC subsystems for display purposes. Standard may also
define form of display presentation
– Alan Rumsey to prepare Scope and Purpose for proposed new
standard for review/approval by RTVISC and to continue to chair
WG for this new standard initiative
March 14, 2000
RTVISC Meeting
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Recommendation #2
 Proposed

This standard establishes the information to be
displayed on trainborne and central graphical user
interfaces in communications-based train control
(CBTC) systems.
 Proposed

Scope
Purpose
This standard will provide for consistent trainborne and
central graphical user interfaces that take advantage of
the characteristics of communications-based train
control (CBTC) systems to enhance service
effectiveness of a rail transit system.
March 14, 2000
RTVISC Meeting
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Recommendation #3
 Expand
highway grade crossing functional
requirements for CBTC systems


67% of group voted on this item
94% of those that voted, voted “for”
– Extent to which expanded grade crossing requirements for CBTC
systems will be addressed by WG14 needs to be clarified
– If not being addressed by WG14, and subject to RTVISC
approval, Vic Grappone has agreed to develop a detailed Scope
and Purpose for proposed new standard, and chair a subgroup of
WG2 to develop the additional functional requirements
March 14, 2000
RTVISC Meeting
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Recommendation #4
 CBTC
standard to address operation of
trains without crews


75% of group voted on this item
90% of those that voted, voted “for”
– In general, it was the opinion of the WG2 members that the
existing IEEE Std. 1474.1-1999 should be reviewed/updated in
approximately 2 to 3 years time, to reflect experience of
ongoing CBTC projects and CBTC system developments, and
it was recommended that the update to include CBTC
performance and functional requirements for train operations
without crews should be incorporated at that time
March 14, 2000
RTVISC Meeting
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Other WG2 Conclusions #1
 CBTC
interoperability interface standards
Wayside CBTC Equipment
Data Communication
System
Trainborne CBTC Equipment
Trainborne Equipment
March 14, 2000
RTVISC Meeting
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Other WG2 Conclusions #1
 CBTC


interoperability interface standard
100% of group voted on this item
only 18% of those that voted, voted for
– While WG2 continues to support the ultimate goal of
interoperability interface standards for CBTC, the WG2
members were unable to reach sufficient consensus that this
effort should be progressed at this time
– In the future, standards in the following area may also be
desirable, but again there was insufficient consensus to proceed
with standards development in these areas at this time:
March 14, 2000
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Other WG2 Conclusions #1a
 Standard
for a data communications
subsystem for CBTC systems


only 68% of group voted on this item
only 63% of those that voted, voted “for”
– Insufficient consensus within WG2 to proceed with standards
development in this areas at this time
March 14, 2000
RTVISC Meeting
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Other WG2 Conclusions #1b
 Standard
for definition of CBTC data
elements


93% of group voted on this item
only 42% of those that voted, voted “for”
– Insufficient consensus within WG2 to proceed with standards
development in this areas at this time
March 14, 2000
RTVISC Meeting
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Other WG2 Conclusions #1c
 Standard
for CBTC/IEEE Std. 1473
interfaces


only 59% of group voted on this item
only 38% of those that voted, voted “for”
– Insufficient consensus within WG2 to proceed with standards
development in this areas at this time
March 14, 2000
RTVISC Meeting
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Other WG2 Conclusions #2
 Acceptance Testing
Standards for CBTC
Systems


79% of group voted on this item
only 64% of those that voted, voted “for”
– Insufficient consensus to proceed with such standards
development at this time
– It was also unclear if such a standard would be within the IEEE
mandate (rather than within the mandate of the applicable
regulatory agencies)
March 14, 2000
RTVISC Meeting
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Other WG2 Conclusions #3
 Maintenance


Standards for CBTC Systems
71% of group voted on this item
only 25% of those that voted, voted “for”
– Insufficient consensus to proceed with such standards
development at this time
March 14, 2000
RTVISC Meeting
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Other WG2 Comments
 Means
of improving coordination between
IEEE CBTC and NAJPTC/RSAC standard
initiatives should continue to be explored
 Means
of establishing coordination between
IEEE CBTC and European Urban Transit
CBTC standard initiatives (UGTMS) should
also be explored
March 14, 2000
RTVISC Meeting
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Next Meeting
 When:
Thursday, April 27, 2000
 Where:
US&S, Pittsburgh
March 14, 2000
RTVISC Meeting
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