Research
State & International Research
Virginia
Research/Project Description
Highway/Metro Wireless Backbone (Wireless with Mobile Hotspots)
Cisco wireless links on Smart Road:
- Setting up wireless networks for police, fire, transit
- Vehicle 2 Roadside 802.11 a/b higher bandwidth apps., streaming video, not mission critical
- Not addressing DSRC highspeed, low overhead, secure networks, mission critical
- Throughput degradation over multiple hops
- Characterizing throughput from vehicle to roadside
- Characterizing handoff latency between mobile unit and roadside Access points
- Optimizing handoff between mobile unit and roadside access points at varied speeds
- Investigating antenna separation effect on collision/contention throughput
- Investigating channel assignments effect on collision/contention throughput
- Implementing Cisco Mobile IP
- Characterizing the affect of LEAP encryption on handoff latency
- Optimizing high bandwidth applications such as video across wireless networks
- Implementing ObjectVideo Mpeg4 (Motion Picture Expert Group) analytics with Cisco QOS controls
Sponsoring Organizations/Researchers
- Cisco Systems/Virginia Tech Transportation Institute
Contact
- Ashwin Amanna, Virginia Tech Transportation Institute, 540-231-6349
Time Frame
To be confirmed
Research/Project Description
Probe Sampling Strategies for Traffic Monitoring Systems Based on Wireless Location Technologies (WLT):
- Tysons Corner Simulation VII testbed
- WLT-based traffic monitoring systems are a form of probe-based monitoring that help approximate the average travel speed and travel time on a road by tracking a series of estimated positions for wireless devices (such as cellular phones) that are located in vehicles
- Speeds for these devices can then be derived by looking at a series of position locations over time
Sponsoring Organizations/Researchers
- Virginia Department of Transportation
- Old Dominion University
- University of Virginia
Contacts
- Michael Fontaine, Research Scientists, VDOT, (434) 293-1980
Time Frame
To be confirmed
Research/Project Description
Research Foundation to support Cooperative infrastructure/Vehicle Surface Transportation Control Management:
- Use vehicle route guidance information in combination with signal optimization programs to improve arterial management
- This work involves development of modeling tools capable of capturing such networking and development of methods for beneficial integration
Sponsoring Organizations/Researchers
- NSF
- University of Virginia
Contacts
- Brian Smith, Associate Professor, UVA, (434) 243-8585
Time Frame
To be confirmed
Research/Project Description
Preparing to Use Vehicle Infrastructure Integration in Transportation Operations: Phase 1
- Development of a high resolution VII/traffic simulation environment using AIMSUN for traffic simulation, integrated with custom code that emulates VII functionality. Using this model, VII roadside units (RSUs) were “placed” based on guidance from the VII architecture and the extent of VII coverage was determined. A prototype traffic monitoring application was developed and evaluated for various penetration rates of VII equipped vehicles on an urban traffic network in the Tysons Corner area.
- Based on current guidance in the VII Architecture, it was found that roughly 55% of the sections in the network would be within the direct range of an RSU. The accuracy and coverage analysis of the network illustrated that, based on the current VII architecture, around 60% of the network could be “covered” at low penetration rates. The error range for mean speed estimation was in range of 2.5 to 4 mph, even at very low VII penetration rates.
Sponsoring Organizations/Researchers
- VDOT/University of Virginia
Contacts
- Cathy McGhee, Program Manager, VDOT, (434) 293-1973
- Brian Smith, Associate Professor, UVA, 434-243-8585