Now showing items 1-6 of 6

    • 3D Virtual Sight Distance Analysis Using Lidar Data 

      Olsen, Michael J.; Hurwitz, David S.; Kashani, Alireza G.; Buker, Kamilah (2016)
      This research project investigated advanced safety analysis methodologies for drivers’ sight distance based on high resolution data acquired using lidar (light detection and ranging) technology. Sight distance analyses ...
    • Alternative Information Signs: an Evaluation of Driver Comprehension and Visual Attention 

      Hurwitz, David S.; Olsen, Michael; Neill, Justin (2015)
      The effectiveness of a traffic sign is collectively influenced by the sign’s understandability, legibility distance, glance legibility, and learnability; however, understandability has been repeatedly identified as a one ...
    • A Platform for Proactive Risk-Based Slope Asset Management - Phase I 

      Metzger, Andrew T.; Olsen, Michael; Wartman, Joseph; Dunham, Lisa; Stuedlein, Armin W. (2014)
      Unstable slopes, including landslides, rock falls, and debris flows, present significant risk to safety and regional commerce, and present a chronic concern for highway managers. Due to the widespread spatial and temporal ...
    • A Platform for Proactive Risk-Based Slope Asset Management - Phase II 

      Cunningham, Keith; Olsen, Michael; Wartman, Joseph; Dunham, Lisa (2015)
      The lidar visualization technique developed by this project enables highway managers to understand changes in slope characteristics along highways. This change detection and analysis can be the basis of informed decisions ...
    • Rendering of Dense, Point Cloud Data in a High Fidelity Driving Simulator 

      Hurwitz, David S.; Olsen, Michael; Marnell, Patrick; Mahmoudabadi, Hamid (2014)
      Driving Simulators are advanced tools that can address many research questions in transportation. Recently they have been used to advance the practice of transportation engineering, specifically signs, signals, pavement ...
    • Unmanned Aircraft System Assessment of Landslide Safety for Transportation Corridors 

      Cunningham, Keith; Olsen, Michael J.; Wartman, Joseph (2016)
      An assessment of unmanned aircraft systems (UAS) concluded that current, off-the-shelf UAS aircraft and cameras can be effective for creating the digital surface models used to evaluate rock-slope stability and landslide ...