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Principal Engineer

Research

Update of the AASHTO Guide for the Planning, Design, and Operation of Pedestrian Facilities

  • 2011
  • AASHTO
  • Associate Engineer
  • Bicycles and Pedestrians
  • Business Processes/Policies and Procedures
  • CEO / GM / Commissioner
  • Director / Program Manager
  • Employee Health and Safety
  • Engineer
  • Leadership
  • Local government/MPO/RTPA cooperation
  • Maintenance and Operations
  • Manager / First Line Supervisor
  • Municipal Operations
  • NCHRP
  • Performance Management
  • Planning
  • Planning for Operations
  • Principal Engineer
  • Public safety agency collaboration
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Senior Engineer
  • Senior Manager
  • TRB
  • TSMO Culture
  • Transportation Planner
    • |PDF
The 1st Edition of the AASHTO Guide for the Planning, Design, and Operation of Pedestrian Facilities (AASHTO Pedestrian Guide) was published in 2004 and reflects the state of the practice in 2001 – 2002 when it was written. Being the first edition, this guide may need some content changes or additio
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Research

Application of AASHTO LRFD Specifications to Design of Sound Barriers

  • 2010
  • AASHTO
  • Associate Engineer
  • CEO / GM / Commissioner
  • Director / Program Manager
  • Engineer
  • Maintenance Staff
  • Maintenance and Operations
  • Manager / First Line Supervisor
  • Media / PIO
  • NCHRP
  • Operator
  • Principal Engineer
  • Project Development
  • Project Development Overview
  • Public
  • Public Safety Officer
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Roadside Maintenance
  • Senior Engineer
  • Senior Manager
  • TRB
  • Technical Understanding
  • Technician
  • Transit Professional
  • Transportation Planner
    • |PDF
The current design criteria for sound barriers are based on the AASHTO Standard “Guide Specifications for Design of Sound Barriers” dated 1989 and interims through 2002. The content of the AASHTO Guide Specifications for design of sound barriers is not consistent with the requirements of the AASHTO
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Research

Rheological Characterization of Flow Table Reference Material

  • 2011
  • AASHTO
  • Associate Engineer
  • Business Processes/Policies and Procedures
  • Communicating Reliability Information
  • Director / Program Manager
  • Engineer
  • Leadership
  • Maintenance Staff
  • Manager / First Line Supervisor
  • NCHRP
  • Operator
  • Organizational Models
  • Principal Engineer
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Senior Engineer
  • Senior Manager
  • TRB
  • Technical Understanding
  • Technician
  • Training and Profesional Development
  • Vendor Access and Product Information
    • |PDF
The objectives of this research are to (1) fully characterize the reference material used in (a) AASHTO M 152, “Flow Table for Use in Tests of Hydraulic Cement,” (b) AASHTO T 71, “Effect of Organic Impurities in Fine Aggregate on Strength of Mortar”; T 137 (ASTM C185), “Air content of Hydraulic Ceme
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Research

Measuring Cement Particle Size and Surface Area by Laser Diffraction

  • 2012
  • Associate Engineer
  • CEO / GM / Commissioner
  • Director / Program Manager
  • Engineer
  • Manager / First Line Supervisor
  • NCHRP
  • Operator
  • Principal Engineer
  • Project Systems Engineering
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Senior Engineer
  • Senior Manager
  • System Architecture
  • System Architecture / Engineering
  • Systems engineering
  • TRB
  • Technician
  • Testing, Verification & Validation (V&V)
    • |PDF
The objectives of this research were to (1) evaluate the practicality and effectiveness of the laser diffraction method to measure the particle size distribution and total surface area of cement powder compared to current methods in use by the state DOTs and (2) prepare a test method to measure part
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Research

Directory of Significant Truck Size and Weight Research

  • 2011
  • Associate Engineer
  • Commercial vehicle size and weight
  • Engineer
  • Freight Data / Analysis
  • Freight Management
  • Freight Management Operations
  • Freight Technology and Operations
  • Manager / First Line Supervisor
  • NCHRP
  • Operator
  • Principal Engineer
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Senior Engineer
  • TRB
    • |PDF
The body of research related to large truck size and weight is extensive, dating back nearly 80 years. In this context, the term “large truck” is generally understood to include single unit or combination vehicles in excess of 10,000 lbs, and in particular, vehicles in excess of 26,000 lbs. Early re
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Research

Analysis of New Highway Lighting Technologies

  • 2013
  • Associate Engineer
  • Director / Program Manager
  • Engineer
  • Maintenance and Operations
  • Manager / First Line Supervisor
  • NCHRP
  • Principal Engineer
  • Public Safety Officer
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Roadway Lighting
  • Senior Engineer
  • Senior Manager
  • TRB
  • Technician
  • Transportation Planner
    • |PDF
The objective of this research is to evaluate the potential and proper application of LED lighting technology and if applicable, other new roadway lighting technologies, to determine if and what additional research is required to properly establish guidance for these technologies. In the event the r
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Research

Updated Research for Collision Damage and Repair of Prestessed Concrete Beams

  • 2012
  • Associate Engineer
  • Director / Program Manager
  • Engineer
  • Equipment Management
  • Maintenance Staff
  • Maintenance and Operations
  • Maintenance and Operations
  • Manager / First Line Supervisor
  • NCHRP
  • Principal Engineer
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Roadside Maintenance
  • Senior Engineer
  • Senior Manager
  • TRB
  • Traffic Incident Management
  • Traffic Incident Management
  • Traffic Incident Management
  • Traffic Incident Management
    • |PDF
Collision between over-height vehicles and bridges is an ever increasing problem nationwide. The bridge community is in need of current state of the art means and methods of evaluation and in-place repair of collision damaged precast/prestressed concrete beams. The NCHRP Report 280: Guidelines for E
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Research

20-Year Vision and Strategic Plan for the Manual on Uniform Traffic Control Devices

  • 2014
  • Active Traffic Management/Travel Demand Management/Pricing
  • Arterial Traffic Control Device Operations
  • Associate Engineer
  • CEO / GM / Commissioner
  • Decision Criteria for ITS Device Type and Location
  • Decision Criteria for ITS Device Type and Location
  • Director / Program Manager
  • Engineer
  • Maintenance Staff
  • Manager / First Line Supervisor
  • Media / PIO
  • NCHRP
  • Operator
  • Principal Engineer
  • Public
  • Public Safety Officer
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Senior Engineer
  • Senior Manager
  • Strategic Planning
  • TRB
  • Technician
  • Transit Professional
  • Transportation Planner
    • |PDF
The objective of this task was to develop a long-range vision (25-30 years from now) of what the MUTCD should be and develop a strategic plan or roadmap for how the MUTCD should be revised to be consistent with the vision. The MUTCD was first published in 1935. In 1970, the Federal Highway Admin
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Research

Update of the AASHTO Guide to Standardized Highway Barrier Hardware

  • 2014
  • AASHTO
  • Associate Engineer
  • CEO / GM / Commissioner
  • Director / Program Manager
  • Engineer
  • Freeway Management
  • Freeway Operations
  • ITS standards and specifications
  • Maintenance Staff
  • Maintenance and Operations
  • Manager / First Line Supervisor
  • Media / PIO
  • NCHRP
  • Operator
  • Principal Engineer
  • Public
  • Public Safety Officer
  • Research
  • Research
  • Research
  • Researcher/Academic
  • Roadside Maintenance
  • Senior Engineer
  • Senior Manager
  • Standards
  • Standards
  • Standards and Interoperability
  • Standards and Specifications
  • TRB
  • Technician
  • Transit Professional
  • Transportation Planner
    • |PDF
The objective of this research was to review and update the information contained within the following AASHTO-AGC-ARTBA Joint Committee, Task Force 13 (TF13) publication ‘A Guide to Standardized Highway Barrier Hardware’, 1995.
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Best Practice

Best Practices for Crack Treatments for Asphalt Pavements

  • 2014
  • Associate Engineer
  • Best Practice
  • Best Practice
  • Engineer
  • Maintenance Staff
  • Maintenance and Operations
  • Manager / First Line Supervisor
  • NCHRP
  • Operator
  • Pothole Repair
  • Principal Engineer
  • Research
  • Senior Engineer
  • TRB
The objective of this research was to prepare a synthesis of current best practices and programs for crack sealing and crack filling of asphalt pavements.
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