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CICAS Coordination Meeting

CICAS Coordination Meeting. Virginia Overview. September 27 th , 2004. Overview of ICA Projects and Supporting Facilities. Outline Description of VTTI ICA Projects Infrastructure Test Bed Vehicle Test Bed Communications Positioning. VTTI ICA Projects. Three Efforts

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CICAS Coordination Meeting

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  1. CICAS Coordination Meeting Virginia Overview September 27th, 2004

  2. Overview of ICA Projects and Supporting Facilities • Outline • Description of VTTI ICA Projects • Infrastructure Test Bed • Vehicle Test Bed • Communications • Positioning

  3. VTTI ICA Projects • Three Efforts • Intersection Collision Avoidance (ICAV) • Intersection Decision Support (IDS) • Left-Turn Across Path – Opposite Direction (LTAP/OD) • Conducted by General Dynamics under VTTI’s Indefinite Quantity Contract with NHTSA • Project considers vehicle-based countermeasures to LTAP/OD crashes for both signalized and unsignalized intersections • Also considering a limited range of cooperative countermeasure alternatives

  4. ICA Areas Addressed

  5. Virginia’s Infrastructure and Vehicle Test Bed • VTTI has developed an over-performing test bed that is architecture independent to develop performance specifications • Test beds support evaluation of multiple architectures • Infrastructure only • Mostly infrastructure based with receiver and DVI in vehicle • Mostly vehicle based with transmitter in infrastructure (provides stop bar location and signal phase/timing) • Totally vehicle based with map in vehicle • For stop signed intersections

  6. Infrastructure Test Bed • Smart Road Intersection • VDOT worked with VTTI to integrate a signalized intersection on the Smart Road, a two-lane 2.2 mile length of road with restricted access • Run participant-driver experiments at up to 55 mph • Run sensor tests up to 70 mph

  7. Intersection Controller • Programmers interface with 2070 and 170 controllers • Programmers developed controller to allow for complete control over the intersection’s traffic lights, including amber shortening, amber omission, and sudden presentation of a light phase

  8. Infrastructure Sensors and Detectors • Radar with a range of 600+ ft • Laser detection technology to simulate point detection • Interface is easily reconfigurable so that new technologies can be quickly added

  9. Infrastructure DIIs • Visual via external signs • Haptic via tactile transducers attached to the vehicle (to simulate an intelligent rumble strip) • Warnings are reconfigurable

  10. Vehicle Test Bed • 2000 Impala was loaned by General Motors for the ICA projects

  11. Vehicle Instrumentation • Data collection system is a modified 100-Car DAS that synchronizes data from: • Vehicle: Pedal positions, velocity, acceleration, range to intersection (differential GPS) • Intersection: Signal phase and timing, infrastructure-based velocity and range to intersection • Experimenter Interface: Trial specifications • Digital video is also collected and synchronized

  12. Vehicle DVIs • Exploring visual, auditory, and haptic warnings

  13. Communications • Simulated DSRC • Allows for the transfer of information within the framework of the intersection safety application • Allows for the transfer of data between the controller and vehicle • Allows synchronization between the vehicle data stream and the controller data stream • Provides for redundancy of the most important dependent measures • Allows for two-way communication, so the infrastructure and vehicle can take over different functions in situ DSRC Antennas

  14. Positioning • Consists of two parts: • Mapping • Vehicle positioning (differential GPS) • Purpose is to accurately place vehicle on the roadway

  15. Positioning Accuracy • Map Accuracy (stationary accuracy) • Average st. dev., 61,180 measurements: • Latitude:  0.011 m (1.1 cm, 0.45 in) • Longitude:  0.009 m (0.9 cm, 0.38 in) • Vehicle Positioning Accuracy (moving accuracy) • Less than 6 inches

  16. Detuning Capabilities • The infrastructure and vehicle test beds are “over performing” • Allows us to “detune” various aspects of the subsystems in order to determine the functional requirements of each subsystem • Directly affects the overall system architecture

  17. Detuning Interface

  18. IDS Technical Reports • Neale, V. L., Perez, M. A., Doerzaph, Z. R., Holbrook, G. T., & Williams, V. (2002). Intersection decision support Task 0: Virginia IDS work plan (Report for Contract No. VTRC-MOAD-02-007). Blacksburg, VA: Virginia Tech Transportation Institute. • Work plan, and includes a literature review • Perez, M. A., Neale, V. L., Holbrook, G. T., Doerzaph, Z. R., & Stone, S. (under review). Intersection decision support. Task B: Top level requirements for an IDS system to mitigate SCP crashes (Report for Contract No. VTRC-MOAD-02-007). Blacksburg, VA: Virginia Tech Transportation Institute. • Preliminary top level requirements and a review of technologies

  19. IDS Technical Reports • Doerzaph, Z. R., Perez, M. A., & Neale, V. L. (under review). Intersection decision support. Task C.1: Enabling Research Experiment - Intersection stopping behavior as influenced by driver state: implications for Intersection Decision Support systems (Report for Contract No. VTRC-MOAD-02-007). Blacksburg, VA: Virginia Tech Transportation Institute. • Doerzaph, Z. R., Perez, M. A., & Neale, V. L. (under review). Intersection decision support. Task C.2: Enabling Research Experiment - Intersection stopping behavior as influenced by driver state: implications for Intersection Decision Support systems (Report for Contract No. VTRC-MOAD-02-007). Blacksburg, VA: Virginia Tech Transportation Institute.

  20. IDS Articles Submitted • Doerzaph, Z. R., Perez, M. A., & Neale, V. L. (2004). Approach profiles for distracted, non-distracted, and willfully violating drivers: implications for an intersection decision support system. Paper presented at the ITS Safety and Security Conference, Miami, FL. • Perez, M. A., Doerzaph, Z. R. & Neale, V. L. (2004). Driver deceleration and response time when approaching an intersection: Implications for intersection violation warning. Paper to be presented at the Proceedings of the 48th Annual Conference of the Human Factors and Ergonomics Society, New Orleans, LA.

  21. ICAV Reports Submitted • Lee, S. E., Knipling, R. R., DeHart, M. C., Perez, M. A., Holbrook, G. T., Brown, S., Stone, S., & Olson, R. L. (2004). Vehicle-based countermeasures for signal and stop sign violation. Task 1: Intersection control violation crash analyses Task 2: Top-level system and human factors requirements (Report No. DOT-HS-809-716). Washington, D.C.: National Highway Traffic Safety Administration. • Preliminary top-level requirements and review of display alternatives and HF display requirements • Lee, S. E., Knipling, R. R., Perez, M. A., Holbrook, G. T., & Stone, S. (under review). Vehicle-based countermeasures for signal and stop sign violation. Task 3 Test and Testbed Plan (Report for Contract No. DTNH22-00-C-07007). Blacksburg, VA: Virginia Tech Transportation Institute. • Preliminary Requirements

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