Design Page 4c - 1

1
S1 Welcome and Introduction S2 State
Preliminary Design Review S3 State
Work/Discussion Sessions S4 General Discussion
of issues and questions S5 Birds of A Feather
design discussions S6 State Program Phase
Charts Review S7 State Work Sessions S8 State
Presentations S9 Feedback Next Steps
Session 4c Discussion - Interoperable Tags
2
Session 4c Discussion - Interoperable Tags

• What readers and tags should states use?
• Whats the Federal policy on tags for screening?
• Whats the status of the interoperability
  agreements?
• What about electronic toll collection?
• What about recent proposals for multiple
  transponder administrators operating in a
  jurisdiction?

3
What readers and tags should states use?

• States should use ASTM v6 active protocol readers
  and tags. The current manufacturers for this
  DSRC equipment are Raytheon (formerly, Hughes
  Aircraft) and Mark IV Industries.
• These tags and readers are currently used by all
  North American E-screening programs.

4
Whats the Federal policy on tags for screening?

• USDOT recently issued a Notice of Proposed Rule
  Making (NPRM) on DSRC the comment period ended
  in Feb 2000.
• The gist of the NPRM is as follows
• Use ASTM v6 prior to Jan 2001
• For 2001 and beyond, use the active sandwich
  protocol products which incorporates the new IEEE
  1455 application standard (supports multiple
  applications).
• These sandwich products will be backwards
  compatible with current ASTM v6 equipment
• The NPRM contains legacy and grandfather clauses
  to protect existing deployments.

5
Whats the status of the interoperability
agreements?

• HELP PrePass and NorPass have a one-way
  interoperability agreement
• Vehicles with NorPass transponders will be
  allowed to receive bypasses at PrePass sites if
  all enrollment and screening requirements are
  met.
• The converse arrangement (PrePass transponders at
  NorPass sites) is not in place.
• Further negotiations are ongoing

6
What about electronic toll collection?

• ETC toll tags such as Title 21, ATA and IAG are
  not approved for E-screening by FHWA.
• Mark IV currently manufactures a Fusion tag which
  supports both the ASTM v6 (screening) and IAG
  (ETC) protocols.
• Mark IV announced plans to develop a super tag
  which supports all North American DSRC protocols
  (ASTM v6, active sandwich, IAG, Title 21 and
  ATA).
• Testing is scheduled to verify non-interference
  of ETC and CVO tags installed in the same vehicle
  and to demonstrate deployment of ASTM v6 readers
  at toll facilities.

7
What about recent proposals for multiple
transponder administrators operating in a
jurisdiction?

• VA has recently issued a RFI on a proposal to
  allow multiple transponder administrators to
  operate within the state. VA would not belong to
  a specific program (such as NorPass or HELP
  PrePass), but instead allow transponders from any
  program to participate in VA.
• It is too early to judge the success of this
  design. If both NorPass and HELP PrePass agree
  to participate, then VA will have achieved a
  major breakthrough on interoperability.

8
What about the 5.9GHz spectrum?

• The FCC has set aside the 5.850 to 5.925GHz band
  for ITS applications.
• Debate continues about how to employ that band.
  SDO activities are ongoing.
• The Layer 1 and Layer 2 DSRC standards for 5.9GHz
  need to be developed.
• Regardless, IEEE Std 1455-1999 is likely to
  remain as Layer 7.