VII California update and status

1
VII California update and status

• Susan Dickey
• California PATH

2
Applications tested with VII California car
company partners

• arterial probe
• map update
• dynamic signage (incidents, driving time to
  airport and other sites,
• arterial travel time, arrival time of caltrain,
  etc.)
• static signage speed limit, POI (restaurants,
  gas stations)
• v2v video (via remote server)
• signal countdown and highway connections
  broadcast
• CICAS-V (traffic signal violation warning)

3
Collaboration with POC VIIC

• Tolling application at Dumbarton Bridge (VII
  California partners MTC)
• Hardware/software testing in collaboration with
  Volkswagen research lab
• Plans for hilly terrain and urban canyon testing
  with portable RSUs 

4
Other previous work

• Early work doing v2v collision avoidance with
  802.11b (in-range), GPS and inertial navigation
• Bus platooning at 2005 World Congress using v2v
  communication over Denso WRM
• Cooperative Adaptive Cruise Control using DSRC
• CICAS-SLTA in-vehicle left-turn warning enabled
  by intersection sensors (working prototype
  application at RFS smart intersection)

5
Current work

• Scalability analysis of probe message acquisition
  and probe data distribution using simulation
• Collaboration with probe data project at UCB
  using cellular communications
• Protocol work for fragmentation and aggregration
  at RSU as appropriate to reduce load on backhaul
• Testing procedures definition and implementation
  for 1609 implementations
• Radio-agnostic (integrating DSRC, WIFI and
  cellular) routing advice and soft safety
  applications based on light-weight OBUs with no
  connection to in-vehicle network
• Transit signal priority work using DSRC
• Truck platooning using DSRC

6
Lessons learned for 1609

• No real experience (yet) with 1609, just
  proto-11p. Everything weve done could be done
  with PSID21
• Do we really need to tie PSID to joining a BSS?
  Shouldnt rules for joining BSS be geographical,
  with local RSUs providing more than one service?
  Should service channel be per RSU, not per app
  (at least for RSU apps)?

7
MCNU Testing Status

• PATH has tested two stationary MCNUs, sending
  messages between two buildings
• Installing and building our software has
  presented no serious problems
• MCNU has been tested with Denso WRMs and works in
  ahdemo mode unknown if it can be made
  interoperable with new Denso OBE

8
Current issues with MCNUs

• Security of MCNU on campus network was
  compromised, as detected by campus sniffer
  software
• Performance problem with packets over 400 bytes
  has been observed (probably system software
  configuration problem)