On the Determination of Driver Reach and Barriers

Driver reach and barriers have a direct effect on performance and safety. This paper presents a rigorous formulation for addressing the reach envelope and barriers therein of a three-point restrained driver and makes a comparison with a lap-restrained driver. This initial stage is focused on the understanding of barriers within the envelope upon which specific postures may or may not allow for crossability from a kinematic point of view. The formulation is based on a kinematic model of the driver, which has the upper body and arm characterized as a seven degree of freedom (DOF) for unrestrained and a 4 DOF for three-point restrained. Visualization of such barriers and their crossability results within the reach envelope provide significant insight into driver performance and reach zones. Findings show that restrained drivers whose upper extremity is modeled as a 4 DOF kinematic linkage has far more non-crossability than unrestrained drivers modeled as a 7 DOF. Findings also show that crossability at a singular curve within the reach envelope can now be determined in closed form and provides a first step toward delineating zones and regions within the envelope associated with driver quantifiable properties such as comfort and effort.

  • Availability:
  • Authors:
    • Yang, Jingzhou
    • Abdel-Malek, Karim
    • Nebel, Kyle
  • Publication Date: 2005


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01000433
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 24 2005 11:07PM