EXPERIENCE OF MEAN SPEED RELATED TO SPEEDS OVER PARTS OF A TRIP

Subjects were asked to judge the mean speed of a model engine which travelled part of a fixed distance at one steady speed and the remainder at a different steady speed. Mean speed was consistently overestimated when compared with judgements of constant speed over the same distance, suggesting that the faster speed was given too much weight when an impression of mean speed was formed. This, and results reported earlier by the author, indicate that when a driver is allowed to speed up for short periods of time he may overestimate the effect of these spurts on his mean speed and travel time. (A) /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00140139
• Corporate Authors:

  Taylor & Francis

  4 Park Square, Milton Park
  Abingdon,   United Kingdom  OX14 4RN
• Authors:
  • Svenson, D
• Publication Date: 1976-1

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 11-20
• Serial:
  • Ergonomics
  • Volume: 19
  • Issue Number: 1
  • Publisher: Taylor & Francis
  • ISSN: 0014-0139
  • EISSN: 1366-5847
  • Serial URL: http://www.tandfonline.com/loi/terg20

Subject/Index Terms

• TRT Terms: Average; Drivers; Driving; Engines; Estimating; Estimation theory; Highway safety; Human factors; Mathematical models; Mechanical acceleration; Motor vehicles; Psychology; Simulation; Speed; Statistical mean; Traffic speed; Travel; Travel time; Vehicles
• Uncontrolled Terms: Models; Trip
• Old TRIS Terms: Mean (Statistical)
• ITRD Terms: 5405: Acceleration; 1057: Air transport network; 6549: Average; 1772: Driver; 1855: Driving (veh); 132: Forecast; 2257: Human factor; 2255: Psychology; 9103: Simulation; 5408: Speed
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment; I83: Accidents and the Human Factor;

Filing Info

• Accession Number: 00137488
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Dec 15 1976 12:00AM