Browsing Pacific Northwest Transportation Consortium by Author "6b3b5905-3a51-4109-8106-bfb65375ebc1"
Now showing items 1-7 of 7
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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 ... -
Efficient Extraction and Evaluation of Complex Pavement Markings from Mobile Laser Scan Data
Olsen, Michael; Jung, Jaehoon (2020)Pavement markings are an important traffic control device, enhancing both the safety and efficiency of various modes of transportation by aiding vehicles, bicyclists, and pedestrians in effectively navigating the transportation ... -
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 ...