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    Macrotexture Assessments Using Line-Laser Technology

    Oracheff, Alexander / Wang, Guangming / Fletcher, James H. | Transportation Research Record | 2022
    -lasers have been recognized by the FDOT to accurately measure MPD on flexible pavement. However, current point-laser technology is unable to ...

    Quantitative Assessments of Crack Sealing Benefits by 3D Laser Technology

    Yang, Zhongyu / Zhang, Xinyi / Tsai, Yichang (James) et al. | Transportation Research Record | 2021
    measured accurately and efficiently. In this study, 3D laser technology is proposed to measure and compare the growth of crack lengths between ...

    Comparative Testing of Lasers for Ride Quality Measurement on Hot-Mix Asphalt Pavements

    Fernando, Emmanuel G. / Walker, Roger S. / Mikhail, Magdy | Transportation Research Record | 2014
    lasers, which the department has been using to monitor pavement smoothness on the state highway network. Since the Texas DOT implemented its ...

    Roughness Index Measured with Triple-Point and Line Lasers in Textured and Nontextured Strips

    Izevbekhai, Bernard Igbafen / Ig-Izevbekhai, Jed Ohiremen Tamunodienye / Wong, Manshean (Sharon) | Transportation Research Record | 2019

    Practitioners have often wondered whether, during ride measurement with inertial devices, the motion of the laser through pavement

     ...

    Quantifying Roughness of Unpaved Roads by Terrestrial Laser Scanning

    Alhasan, Ahmad / White, David J. / De Brabanter, Kris | Transportation Research Record | 2019
    ., corrugation). This paper presents a study that shows how terrestrial laser scanning can characterize road roughness in relation to ( a) a spatially ...

    Method for Automated Discontinuity Analysis of Rock Slopes with Three-Dimensional Laser Scanning

    Slob, Siefko / van Knapen, Bart / Hack, Robert et al. | Transportation Research Record | 2005

      Method for Automated Discontinuity Analysis of Rock Slopes with Three-Dimensional Laser Scanning

      Slob, Siefko / van Knapen, Bart / Hack, Robert et al. | Transportation Research Record | 2019

      Three-dimensional (3D) laser scanning data can be used to characterize discontinuous rock masses in an unbiased, rapid, and accurate

       ...

    3D Laser Triangulation and Deep Learning Approach to Tunnel Inspection

    Fox-Ivey, Richard / Petitclerc, Benoit / Laurent, John | Transportation Research Record | 2021
    . This presentation will explore the use of 3D laser scanning technology and artificial intelligence to automate the inspection process with a ...

    Analytical and Laser Scanning Techniques to Determine Shape Properties of Aggregates

    Komba, Julius J. / Anochie-Boateng, Joseph K. / van der Merwe Steyn, Wyand | Transportation Research Record | 2013
    quantified historically because of their irregular and nonideal shapes. This paper presents selected results from the use of a laser-based scanning ...

    Cross-Correlation Analysis of Line Laser High-speed Inertial Profilers

    Borelli, Noah / Choubane, Bouzid / Greene, James et al. | Transportation Research Record | 2020

    Thirteen different line-laser high-speed inertial profilers from four different manufacturers were recently tested at the Florida

     ...

    Evaluation of a Continuous Laser Ablation Coating Removal Device for Steel Bridges

    Provines, Jason / Rickard, Raquel / Sharp, Stephen | Transportation Research Record | 2022
    expense of blast cleaning is laser ablation coating removal (LACR). LACR uses a high-energy laser, rather than conventional blasting, to remove ...

    Use of Laser Texture Scanner to Control Quality of Chip Seal Construction

    Umutoniwase, Angelique / Wen, Haifang / Littleton, Kevin | Transportation Research Record | 2024
    not provide accurate and reliable results. This study evaluated the use of laser texture scanner as quality control of chip seal construction ...

    Visibility of Laser Beams and Illuminated Delineator as a Function of Fog Density

    Hagiwara, Toru / Yagi, Mamiko / Seo, Takuya | Transportation Research Record | 2019
    delineator that uses laser beams is proposed. Very few data have been published with regard to the visibility of laser beams in fog. However, laser ...

    Use of a Laser Diffractometer to Obtain the Particle Size Distribution of Fine-Grained Soils

    Galacgac, Jessica A. / Ooi, Phillip S. K. | Transportation Research Record | 2018
    test duration, whereas a laser diffractometer can provide a soil’s PSD relatively expediently. PSDs of the finer fraction of several Hawaiian ...

    Airborne Laser Survey Specifications and Quality Management Protocols for Airport Obstruction Surveys

    Uddin, Waheed / Gutelius, Bill / Parrish, Christopher | Transportation Research Record | 2011

    Scanning Laser Detection System Used to Measure Propagation of Fatigue Damage of Asphalt Mixes

    Ajideh, Hossein / Bahia, Hussain U. / Earthman, James | Transportation Research Record | 2012
    variability. The primary objective of this research was to develop a scanning laser system that would detect changes in surface properties for the ...

    Testing and Performance Evaluation of Fixed Terrestrial Three-Dimensional Laser Scanning Systems for Highway Applications

    Hiremagalur, Jagannath / Yen, Kin S. / Lasky, Ty A. et al. | Transportation Research Record | 2009

    In many three-dimensional (3-D) laser scanner applications, high relative precision (relative dimensions within the registered point

     ...

    Predicting International Roughness Index Based on Surface Distresses in Various Climate and Traffic Conditions Using Laser Crack Measurement System

    Fakhri, Mansour / Karimi, Seyed Masoud / Barzegaran, Jalal | Transportation Research Record | 2021
    of pavement conditions. This research employs the laser crack measurement system (LCMS) to detect and measure surface distresses and ...

    Laser–Air-Coupled Hybrid Noncontact System for Defect Detection in Rail Tracks

    Status of FRA Prototype Development at University of California–San Diego
    di Scalea, Francesco Lanza / Rizzo, Piervincenzo / Coccia, Stefano et al. | Transportation Research Record | 2006

    Concrete Roughness Characterization Using Laser Profilometry for Fiber-Reinforced Polymer Sheet Application

    Maerz, Norbert H. / Chepur, Poornima / Myers, John J. et al. | Transportation Research Record | 2001
    attained. The method uses laser striping and image analysis. The method was tested on six slabs of sandblasted concrete, which were sandblasted to ...

    Evaluation of a Line Laser Scanner to Improve the Measurement of Average Least Dimension in Chip Seal Design Methods

    Kouchaki, Sareh / Roshani, Hossein / Prozzi, Jorge A. et al. | Transportation Research Record | 2018
    the development of a new high-speed line laser scanner (LLS) prototype to measure the LD value of particles more quickly and accurately. The ...