Improved Positioning for Fleet Management and Traveler Information

Details

• Creators:
  Dailey, Daniel J.
• Corporate Creators:
  University of Washington. Dept. of Electrical Engineering
• Corporate Contributors:
  University of Washington. Transportation Northwest Regional Center X ; United States. Department of Transportation. University Transportation Centers (UTC) Program
• Subject/TRT Terms:
  • Bus transit operations
  • Fleet management
  • Global Positioning System
  • Traveler information and communication systems
  • Advanced traveler information systems
  • Urban areas
  • Wireless communication systems
  • IEEE 802.11 (Standard)
• Publication/ Report Number:
  TNW2008-05
• Resource Type:
  Research Paper
• Geographical Coverage:
  Washington
• Corporate Publisher:
  University of Washington. Transportation Northwest Regional Center X (TransNow)
• Abstract:
  This proposal investigates the possibilities for transit management to take advantage of the ever increasing wireless/Wi-Fi infrastructure in urban areas. In previous projects with Metro and Sound Transit, the authors have evaluated the use of Global Positioning System (GPS) positioning for fleet management and traveler information. While the GPS positioning worked well for both buses on the regional freeways and trains on regional tracks, it deteriorated when the vehicles entered the dense urban core. This is caused by tall buildings or other structures occluding the GPS satellites. This deviation can be sufficient to place the vehicle on the wrong street and disrupt fleet management and traveler information. An additional source of positioning information is becoming more prevalent by the day, the Wi-Fi hotspot. These act as beacons at known locations. This beacon-like position can be integrated with GPS though optimal filtering.
• Format:
  PDF
• Funding:
  DTRS99-G-0010
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/60891/dot_60891_DS1.pdf
• File Type:
  [PDF - 1.11 MB]
• Collection(s):
  University Transportation Centers
• Main Document Checksum:
  urn:sha256:dbb4aae21ce79ee85f3be1e2452c309faaf38472e0aebdf48c4e90758d6ee968