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Developing Tolled-Route Demand Estimation Capabilities for Texas : Opportunities for Enhancement of Existing Models


2014 ... by Kevin Hall [and five others] The travel demand models developed and applied by the Transportation Planning and Programming Division (TPP) of the Texas Department of Transportation (TxDOT) are daily three-step models (i.e., trip generation, trip distribution, and traffic assignment sequentially invoked). Currently, TxDOT TPP

6754-1 [TTI] ... FHWA/TX-14/0-6754-1

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5.2 MB

Game-Theoretic Analysis of Dynamic Traffic Equilibria


2014 ... By Stephen D. Boyles, Christopher Melson, Tarun Rambha, Jennifer C. Duthie Dynamic traffic assignment has grown steadily in popularity and use since its inception. It has become an important and permanent tool in transportation agencies across the country. However, the exact nature of dynamic traffic equilibrium,

2014-600451-00079-1 [CTR] ... SWUTC/14/600451-00079-1

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740 KB

0-6754, Review of Tolling Approaches for Implementation within TxDOTs Travel Demand Models


[2014] ... Research Performed by: Texas A&M Transportation Institute (TTI), Center for Transportation Research (CTR); Research Supervisor: Kevin Hall; Researchers: Kara Kockelman [and five others] "The urban travel demand models developed and applied by the Transportation Planning and Programming Division of the Texas

6754 PSR [TTI] ... 0-6754-S ... Project Summary

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92 KB

Game Theory and Traffic Assignment


2013 ... by Tarun Rambha, Stephen D. Boyles Traffic assignment is used to determine the number of users on roadway links in a network. While this problem has been widely studied in transportation literature, its use of the concept of equilibrium has attracted considerable interest in the field of game theory. The approaches used in both

2013-600451-00065-1 [CTR] ... SWUTC/13/600451-00065-1

Full-text Link:
1.5 MB

Investigating Regional Dynamic Traffic Assignment Modeling for Improved Bottleneck Analysis. Final Report


2013 ... Jennifer C. Duthie [and eight others] This research employed dynamic traffic assignment (DTA) modeling to study the network-wide impact of bottleneck alleviation measures taken by TxDOT on MoPac Expressway in downtown Austin. The measures led to a small improvement in MoPac travel conditions and no major

6657-1 [CTR] ... FHWA/TX-13/0-6657-1

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2.6 MB

Project Evaluation Toolkit (PET) for Abstracted Networks


2013 ... Kara Kockelman [and three others] This report summarizes the research completed for TxDOT Project No. 5-6235-01 and discusses the implications and future applications of the work. This project extended the capabilities of the Project Evaluation Toolkit (PET), while introducing the software to a large network of potential

6235-01-1 [CTR] ... FHWA/TX-13/5-6235-01-1

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764 KB

User's Guide for PET : Project Evaluation Toolkit : A Sketch-Planning Toolkit for Evaluating Highway Transportation Projects, Version 2.0


2013 ... Dr. Kara Kockelman [and four others] "Transportation planning involves evaluating the congestion, safety, emissions, and other impacts of large-scale network improvements and policy implementations. This document is a User's Guide for the Project Evaluation Toolkit (PET), a sketch planning toolkit developed for

6487-P1 [CTR] ... 0-6487-P1 / 5-6235-01-P1; Product 5-6235-01-P2; Product 5-6235-01-P3; Product 5-

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3.75 MB

A Project Evaluation Toolkit (PET) for Abstracted Networks : Final Report


2013 ... Kara Kockelman, Dan Fagnant, Brice Nichols, Steve Boyles This report summarizes research for TxDOT Project No. 0-6487, which enhanced and expanded the open-source Project Evaluation Toolkit (PET) to evaluate operational strategies for transport project (and policy) impact evaluation. Such strategies include

6487-1 [CTR] ... FHWA/TX-2013/0-6487-1

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1.8 MB

0-6657, Investigating Regional Dynamic Traffic Assignment Modeling for Improved Bottleneck Analysis


2013 ... Research Performed by: Center for Transportation Research; Research Supervisor: S. Travis Waller; Researchers: Jennifer C. Duthie [and seven others] "The Texas Department of Transportation (TxDOT) made geometric changes to the MoPac Expressway near the downtown Austin area in September 2010 to alleviate the

6657 PSR [CTR] ... 0-6657-S ... Project Summary Report

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150 KB

0-6487, Development of a Performance Measurement-Based Methodology to Objectively Compare Operational Improvements with Capacity Additions


2013 ... Research Performed by: Center for Transportation Research; Research Supervisor: Dr. Kara Kockelman; Researchers: Stephen Boyles, Daniel Fagnant, Brice Nichols "Preliminary project analysis and comparison are important for agencies in funding considerations and anticipating network impacts. Agencies are presented with

6487 PSR [CTR] ... 0-6487-S ... Project Summary Report

Full-text Link:
161 KB

Guidebook on DTA Data Needs and Interface Options for integration into the Planning Process


2012 ... Jennifer Duthie [and four others] "The goals of this guidebook are three-fold: 1) outline the data needed to run a dynamic traffic assignment (DTA) model, 2) propose methods for integrating DTA with macroscopic planning models and microscopic simulation models, and 3) propose methods for integrating DTA within the four-

6657-P1 [CTR] ... Product 0-6657-P1

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2.1 MB

Robust Pricing of Transportation Networks Under Uncertainty


2010 ... Stephen D. Boyles, Lauren Gardner and S. Travis Waller Both public and private entities are concerned with the impacts of future toll revenue, and the effects of tolled facilities on system congestion. Due to the inherent complexity of transportation systems, it is impossible to predict travel demand and congestion conditions exactly,

2010- 169206-1 [CTR] ... SWUTC/10/169206-1

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Quantifying Travel Time Variability in Transportation Networks


2010 ... Stephen D. Boyles, Avinash Voruganti and S. Travis Waller Nonrecurring congestion creates significant delay on freeways in urban areas, lending importance to the study of facility reliability. In locations where traffic detectors record and archive data, approximate probability distributions for travel speed or other quantities of

2010- 167275-1 [CTR] ... SWUTC/10/167275-1

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Utilizing the Data Collected at Traffic Management Centers for Planning Purposes Through Non-Traditional Sources and Improved Equipment


2008 ... RS: S. Travis Waller; Researchers: Stephen Boyles [and eight others] With ever increasing demands placed on their resources, all transportation agencies must seek innovative methods for achieving their objectives. Transportation system monitoring presents a highly valuable opportunity for improved efficiency through

5686 [CTR] ... PSR 0-5686 ... Project Summary Report, 0-5686

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Archiving, Sharing, and Quantifying Reliability of Traffic Data


2008 ... S. Travis Waller [and nine others] Vast quantities of transportation data are automatically recorded by intelligent transportation infrastructure, such as inductive loop detectors, video cameras, and side-fire radar devices. Such devices are typically deployed by traffic management centers (TMCs), and the data used for

5686-1 [CTR] ... FHWA/TX-09/0-5686-1

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3.7 MB

Ramp Treatment and Dynamic Closure Strategies for Incident Traffic Management.


2007 ... RS: S. Travis Waller; Researchers: Stephen Boyles [and three others] As traffic congestion levels throughout the nation continue to increase, huge amounts of research, political, and technical effort have been invested to alleviate the negative impacts of congestion. Most freeway congestion is a result of nonrecurring events

5422-s [CTR] ... PSR 0-5422 ... Project Summary Report, 0-5422

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Ramp Closure Strategies for Incident Management


2007 ... Travis Waller, Stephen Boyles, David Fajardo and Ampol Karoonsoontawong Non-recurring congestion accounts for a significant portion of freeway delay experienced by motorists in both rural and urban areas. Because access to these facilities is controlled by on ramps, these can play a major role in minimizing the impact that

5422-1 [CTR] ... 0-5422-1

Full-text Link:
461 KB

Incident Duration Prediction Models


2007 ... prepared by Travis Waller and Stephen Boyles CDROM includes software documentation and NBDIS executable program. | "NBIDS is designed to predict incident duration (one common measure of severity) in real-time, using historical incident data with a minimum of calibration effort. Chapter 2 [documentation] guides the

5422-P2 [CTR] ... Product 0-5422-P2

Full-text Link:
294 KB ZIP = 1 PDF & 1 .exe file

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