Technical Understanding

Presentation

Webinar Materials: Decision Support Systems for TSM&O - A Florida Case Study

This page contains the presentation materials from the February 29th webinar on Decision Support Systems for TSM&O (http://transportationops.org/event/decision-support-systems-tsmo-%E2%80%93-florida-case-study). There are three items included here:

- The recording of the webinar aud

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Ondemand Learning

Automated Traffic Signal Performance Measures Workshop

The Automated Traffic Signal Performance Measure (SPM) Workshop, held on January 26–27, 2016, in Salt Lake City, Utah, provided a forum to share best practices, agency progress, and configuring and troubleshooting tips, as well as to discuss the potential future of SPMs. Representatives from more th
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Research

Replacement Process for LED (Light Emitting Diode) Traffic Signals

As an initial step in developing maintenance guidelines for LED traffic signals, this project developed a process for determining when LED traffic signal heads should be replaced. Task 1. Synthesize existing human factors research relevant to the visibility of traffic signals, updating it as ap
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Research

Safety Impacts of the Emerging Digital Display Technology for Outdoor Advertising Signs

This topic will review on-going human factor studies and guidelines with regard to highway agency DMS’s and CMS’s now in use on highways. The panel noted that the panel for this topic should include a representative from the outdoor advertising industry. The final report has been submitted and copi
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Best Practice

Best Practices for Implementing Quality Control and Quality Assurance for Tunnel Inspection

The objective of this project is to develop guidelines for owners to use in selecting practices for tunnel inspection, operational safety and emergency response systems testing, and inventory procedures to improve the safety of highway tunnels.
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Research

Seismic Isolation Design Examples of Highway Bridges

The objective of this research was to develop the Third Edition of the AASHTO Guide Specifications for Isolation Design with examples.
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Research

Application of AASHTO LRFD Specifications to Design of Sound Barriers

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

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

Identification of Cross-Cutting Issues Related to the Development, Management, and Delivery of Transportation Projects and Programs

State departments of transportation (DOTs) face many challenges today. Acquiring adequate staffing, managing critical assets, dealing with political issues at federal, state and local levels, and serving a public with ever higher expectations are just a few. It has never been more difficult to take
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