METROPOLITAN EXPRESSWAY RADIO SYSTEM

The Metropolitan Expressway Public Corporation has established a system called the Metropolitan Expressway Radio System to expand the amount of traffic information offered. This new system automatically gives drivers consistently updated, detailed information regarding traffic conditions using the human voice. Traffic information is sent along the roadway via roadside communication terminals and antennas, which are installed at strategic points. Information is gathered, processed, and broadcasted to cars traveling along the route using a frequency of 1620 kHz. The information broadcast is updated at 5-minute intervals, and includes details about accidents, road construction, congestion, and estimated travel time to major destinations. The real-time information is very effective for route selection and smoother driving conditions, making drivers more comfortable behind the wheel. The system operates on a 24-hour a day basis and utilizes a duplex system to guarantee reliability. The system features a voice offering method, allowing detailed information to be given in an understandable manner. Every message has an output provision time of 60 seconds, and offers a variety of information that cannot be offered by roadway information boards. The system uses a speech synthesizing method by which voice recordings are divided into phrases and registered as fragments; then processed and composed into sentences. These sentences are linked naturally, and thus, easy to understand. The system has proven highly effective in its performance.

• Supplemental Notes:
  • Five volumes of papers and one volume of abstracts comprise the published set of conference materials.
• Corporate Authors:

  VERTIS

  TORANOMOM 34 MORI BUILDING 1-25-5
  TORANOMON, MINATOKU, TOKYO 105  Japan 
• Authors:
  • Sakai, T
  • Arimitsu, C
• Conference:
  • Steps Forward. Intelligent Transport Systems World Congress
  • Location: Yokohama, Japan
  • Date: 1995-11-9 to 1995-11-11
• Publication Date: 1995-11

Language

• English

Media Info

• Pagination: p. 650

Subject/Index Terms

• TRT Terms: Broadcasting; Driver information systems; Intelligent transportation systems; Real time control; Route choice; Speech synthesis; Travel time
• Geographic Terms: Japan
• Old TRIS Terms: Real time operations
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00721156
• Record Type: Publication
• Report/Paper Numbers: Volume 2
• Files: TRIS
• Created Date: May 28 1996 12:00AM