FULLY-AUTOMATED ACQUISITION AND PROCESSING OF TRAFFIC DATA

This article describes means to collect basic traffic data within a real-time matrix and record them in computer- readable form. The data carrier is a standard 0.5-in. nine-track magnetic tape. The recording format is 800 BPI NRZI and is IBM 360/370 compatible. Subsequent computer processing of these source data not only yields an accurate traffic count, but also establishes these parameters for each vehicle: speed, length and time gap to preceding vehicle. The source data are collected simultaneously for each lane of multi-lane highways and take into account such driver behaviour as passing, lane changing and lane straddling. A data collection run is normally preceded by manual inputs of basic information such as location, date, hour, weather and road condition. It is explained in general terms how the raw data are processed by the computer software for various end products in either printed or plotted form. /Author/TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00410683
• Corporate Authors:

  Printerhall Limited

  29 Newmart Street
  London W1P 3PE,   England 
• Authors:
  • LENZ, K H
  • HOTOP, R
• Publication Date: 1974-8-9

Language

• English

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 754-759
• Serial:
  • Traffic Engineering & Control
  • Volume: 15
  • Issue Number: 16/1
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Behavior; Data collection; Digital computers; Headways; Information processing; Lane changing; Magnetic tapes; Multilane highways; Passing; Spacing; Speed; Traffic; Traffic counting; Traffic counts; Traffic lanes; Traffic speed; Vehicle spacing
• Old TRIS Terms: Data recording
• ITRD Terms: 9001: Behaviour; 8655: Data processing; 8673: Digital computer; 5408: Speed; 689: Traffic count; 2827: Traffic lane; 694: Vehicle spacing
• Subject Areas: Administration and Management; Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00096716
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Oct 18 1975 12:00AM