Network Data

Orange County Network

Orange County network covers several cities in Orange County, California. Especially Anaheim is known as a event city where where many event palces, such as Disney Land, Convention Center, Angels Stadium, Ducks sports arena, etc., are located. The area is approximately 30 mile by 30 mile.

Irvine Golden Triangle

The Irvine Golden Triangle is a part of the Orange County Netpork and is known as El Toro Y where Intersate freeway 5 and 405 are merged. The high accuracy network includes detailed signal and ramp control schemes as well as real time traffic data from freeway and arterial loop detectors. The area is perfect place for the microscopic model calibration and validation study thanks to availabilty of the real-time traffic data and detailed network coding. The data has been used for a field test in the FHWA's dynamic traffic assignment project.

Interstate Freeway 405

A six-mile long I-405 section has been coded in very detail level including detector locations as well as ramp metering plans. Within the area a new detector testbed is under construction, so that various surveillance systems (loop detectors, advanced loop detectors for vehicle tracking, video image processing, etc) will also be incorporated into the micro simulation. The site will be suitable not only for traffic model calibration/validation but also for testing on-line simulation model with real-time traffic measurements.

State Route 91

The SR-91 connecting Orange County and Riverside County is one of the most congested routes in Southern California and has a unique feature in its operation. A 10-mile long toll lane is running in the middle of the freeway and a time varying toll scheme is applied in order to reflect traffic condition. The route has been used as a site for driver depature time and route choice behavior studies.

Traffic Data Sets

Histroic and Real-time Traffic Data

UCI/ITS collects real-time and histroic traffic data from various traffic data sources including Caltrans District 12, City of Irvine and City of Anaheim. Historical freeway data are acquired via webpage and/or CORBA proxy through ITS firewall, and real-time freeway data are available on the Testbed lab PTL network  via a CORBA interface.

• Freeway Loop Detector Data from Caltrans District 12
• Loop Detector Data from City of Irvine and City of Anaheim

Real-time Vehicle Tracking (TRACER)

UCI-Testbed receives and transmits GPS data via web-based CDPD 2-way wireless communication.
PC 104 Pentium Processor, Linux OS, Compact flash RAM
12-channel Garmin GPS 35 TracPak
Vibration sensor for auto on/off
OpenMap GIS Analysis and Display

Arterial Vehicle Reidenfitication via Vehicle Signtaure Matching

A vehicle reidentification technoloy is used for arterial network performance measure. The vehicle signature-based vehicle reidentification and tracking methodology is capable of measureing intersection delay in real-time and tracing vehicles.

Real-time Arterial Data (City of Irvine)

Traffic data transmitted over IP network between UCI/ITS and the City of Irvine are stored on a dedicated machine at UCI/ITS.
Currently the real-time data are available at the following three intersections: Alton@Technology Way, Alton@Irvine Center Drive, and Alton@Gateway. Traffic count data are collected from the Sarasota detector devices across the serial interface between the PC and the detector. The real-time arterial data collection system is expanding to 22 intersections along Alton & Irvine Center Drive.

Detector Testbed at I-405

OVERHEAD MOUNTS

• "Ground Truth" video cameras over each lane
  
• Connected to a bank of VCRs & to an automated Video
• Image Capture and re-identification system
  
• Laser Detectors (future)

SIDE MOUNTS

• OMRON Vision Sensor detector
  
• Remote Traffic Microwave Sensor (RTMS) radar sensor detector
  
• Pan-Tilt-Zoom (PTZ) Webcam
• Spread spectrum Radios (SSR).
  

IN-PAVEMENT

• Double loops in all traffic lanes
  
• Blade (future)