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Research

U.S. Bicycle Route Guide Signing

The objective of this project was to evaluate the signing needed for effective wayfinding and consistency on co-designated numbered and/or named bicycle routes, specifically U.S. Bicycle Routes, recognizing funding and resource constraints. The final report provides recommendations for an effective
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Research

U.S. Domestic Scan Program: Leading Management Practices for Developing a Cross-Trained Workforce

Nationally, there is an increasing need for DOT organizations to be more efficient with limited resources and a reduced workforce. One strategy that is being tried within some agencies is to cross train their workforce. A cross-trained workforce can be more efficient and agile in adapting to an a

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Research

Unmanned Aircraft Systems (UAS) - Critical Infrastructure

In addition to recreational use, unmanned aircraft systems (UAS)—also known as unmanned aerial vehicles (UAV) or drones—are used across our Nation to support firefighting and search and rescue operations, to monitor and assess critical infrastructure, to provide disaster relief by transporti

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Research

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

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

Update of the AASHTO Guide to Standardized Highway Barrier Hardware

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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Research

Update to AASHTO’s Visualization in Transportation: A Guide for Transportation Agencies

The AASHTO Technical Committee on Environmental Design (TCED) developed the AASHTO Guide for Visualization in Transportation in 2001 and updated it in 2003. The guide has provided valuable assistance to State Departments of Transportation across the country that are seeking sound information, guidan
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Research

Updated Research for Collision Damage and Repair of Prestessed Concrete Beams

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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Presentation

Use of Transportation Asset Management Principles in State Highway Agencies

 

Roadway infrastructure within the United States includes features such as roads, bridges, signs, pavement markings, traffic signals, support commerce and mobility, and is, in essence, a shared financial public resource worthy of being managed

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Research

User’s Guide to Develop Highway Safety Manual Safety Performance Function Calibration Factors

The objective of this task was to provide step by step instructions for developing calibration factors for use with the Highway Safety Manual (HSM) safety performance functions. Tasks included the following: Review Part C and Appendix A, Volume 2 of the Highway Safety Manual; Review current literat
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