Principal Engineer

Informational Product

Testing Programs for Transportation Management Systems: A Primer

Testing describes a series of processes and procedures developed in the information technology community to verify and validate system performance. While some of the terms used in testing may be unfamiliar to transportation professionals, the core concepts and processes are not technically comple

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Best Practice

Traffic Signal LED Module Specification Workshop and Informational Report for Snow Conditions

The primary objective of this research was to identify significant environmental (i.e., weather) variables that may contribute to snow and ice buildup on LED traffic signal lenses. If a subset of variables can be identified that may predict the potential occurrence of snow and/or ice buildup on L

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Research

Highway Evacuations in Selected Metropolitan Areas: Assessment of Impediments

Almost 5 years after hurricanes Katrina and Rita battered Louisiana and Texas, respectively, public officials remain focused on the Nation's ability to safely evacuate large numbers of people. As a part of the Fiscal Year 2010 U.S. Department of Transportation (DOT) appropriations (Public Law 111

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Best Practice

Best Practice: The San Antonio Wrong Way Driving Initiative

Best Practice: The San Antonio Wrong Way Driving Initiative

Recently, a state DOT’s inquired about warning signs for motorists driving the wrong way. This has been an issue that many public agencies face. The Texas Department of Transportation had some of the same issues and has taken t

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Research

Measures of Effectiveness and Validation Guidance for Adaptive Signal Control Technologies

The intent of this project is to identify, develop, demonstrate and document measures of effectiveness that can be applied to validate the achievement of traffic signal operations objectives. Adaptive Signal Control Technology (ASCT) is an operational strategy that applies tactics aimed at achiev

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Research

Guide for Highway Capacity and Operations Analysis of Active Transportation and Demand Management Strategies

Introduction

ATDM is the dynamic management, control, and influence of travel demand, traffic demand, and traffic flow of transportation facilities. Through the use of available tools and assets, traffic flow is managed and traveler behavior is influenced in real-time to achieve operati

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Case Studies & Lessons Learned

Case Studies in Using Reliability Performance Measures in Transportation Planning

This technical memorandum provides information from six sample case studies performed under the project for the Knoxville Regional Transportation Planning Organization, Florida Department of Transportation, Los Angeles Metropolitan Transit Authority, Southeast Michigan Council of Goverments,

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Research

Guide to Incorporating Reliability Performance Measures into the Transportation Planning and Programming Processes

This Guide is intended to be a high-level reference document for transportation planners, operators, and system managers. The reliability of the transportation system refers to the uncertainty or variability that system users experience in the time it takes to travel from one place to another—fro

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