Driving Is Smoother and More Stable When Using the Tangent Point

This article considers the use of a tangent point to assist automobile drivers negotiate curves in the roadway. The authors describe the tangent point strategy which uses the angle between the tangent point of the inner lane markings and the car's current heading direction, which is proportional to the required steering angle. Another option is the gaze-sampling strategy in which drivers fixate points on the future path and measure the curvature of optic flow vectors which can inform the drivers whether they over- or under-steer. The authors report on a study in which nine subjects drove repeatedly on the four loops of a motorway junction for which street parameters were available, while eye-movements, steering parameters and relations of the car to the lane were recorded. In the first half of the trials, they observed which strategy drivers normally use. In the second half, they instructed subjects to use exclusively either the tangent-point or the gaze-sampling strategy and observed their steering behavior. The results found that subjects normally look at the tangent point and they do not use gaze sampling of their own accord. The authors note that the subjects also drive more smoothly in terms of position on the lane and steering stability in the tangent-point condition.

  • Authors:
    • Kandil, Farid I
    • Rotter, Alexander
    • Lappe, Markus
  • Publication Date: 2009

Language

  • English

Media Info

  • Media Type: Print
  • Pagination: pp 1-11
  • Serial:
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 01150365
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 9 2010 11:12AM