Potential connected vehicle applications to enhance mobility, safety, and environmental security
Date: February 2012
Creator: Balke, Kevin N.
Description: "Researchers first conducted a comprehensive review of the state-of-the-art connected-vehicle research and technologies. Once researchers had a thorough understanding of the technology, they focused on selecting and developing the near-term practical applications that use connected vehicle technology. The research team then sought expert opinions from the Texas Transportation Institute working group during two brainstorming sessions, which produced two lists of potential applications and prioritized the applications based on deployment feasibility. In particular, a total of five applications were selected for development of the full concept of operations, including two in safety, two in mobility, and one in environmental security. These applications address various problems, including wrong-way driving and unprotected-grade-crossing crashes (safety): work-zone merge efficiency and safety, and freeway speed harmonization (mobility): and slippery pavement-related crashes (environmental security)."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth281728/
Predicting damage in concrete due to expansive aggregates : modeling to enable sustainable material design
Date: April 2012
Creator: Grasley, Zachary Charles
Description: "A poroelastic model is developed that can predict stress and strain distributions and, thus, ostensibly damage likelihood in concrete under freezing conditions caused by aggregates with undesirable combinations of geometry and constitutive properties.Sensitivity of the stress distributions to the aggregate and matrix constitutive parameters are assessed to allow improved concrete design."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth281732/
Laboratory evaluation of friction loss and compactability of asphalt mixtures
Date: April 2012
Creator: Kassem, Emad Abdel-Rahman
Description: "This study aimed to develop prediction models for friction loss and laboratory compaction of asphalt mixtures. In addition, the study evaluated the effect of compaction level and compaction method of skid resistance and the internal structure of asphalt mixtures."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth281730/
The economic efficiency of allowing longer combination vehicles in Texas
Date: August 2011
Creator: Walton, C. Michael.
Description: "This paper shows the economic efficiency of allowing longer combination vehicles in Texas. First, an overview of the truck size and weight policies is explained, with an emphasis on those that affect Texas. Next, LCV operations in other countries are described. Then, an LCV scenario for Texas is chosen, with specific routes and vehicle types. Operational costs for these vehicles are calculated on a cost per mile and cost per ton (or cubic yard) mile. The LCV scenario and the current truck base case are analyzed to find the number of truck trips, the number of mile, and the cost per mile for the chosen routes. These are then compared to estimate the change if LCVs were allowed in Texas."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth281757/
Fracture properties and fatigue cracking resistance of asphalt binders
Date: March 2012
Creator: Bhasin, Amit.
Description: "The main objective of this study was to evaluate the inherent fatigue cracking resistance of asphalt binders in the form of a matrix with rigid particle inclusions. The underlying rational for this approach was to subject the binders to a state of stress that is similar to the one in a full asphalt mixture."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth281727/
Development of warrants for installation of dual right-turn lanes at signalized intersections
Date: April 2012
Creator: Chen, Xiaoming
Description: "Right-turn lanes provide space for the deceleration and storage of right-turn vehicle, and separate turning vehicles from through movements. Dual right-turn lanes are increasingly used at urban intersections primarily for two reason: (1) to accommodate high right-turn demands and avoid turn-pocket overflows, and/or (2) to prevent right-turn vehicles that exit from a nearby upstream freeway off-ramp (on the left of the roadway) from abruptly changing too many lanes toward the right-turn lane at intersection."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth281724/
Compendium of student papers: 2011 undergraduate transportation scholars program.
Date: May 2012
Creator: Desorcie, Felicia
Description: "This report is a compilation of research papers written by students participating in the 2011 Undergraduate Transportation Scholars Program. The papers in this compendium report on the following topics, respectively: 1) evaluating the impact of nighttime work zone lighting characteristics n motorists; 2) late night roadway visibility; 3) investigation of the use and pricing of the I-15 express lanes in San Diego; 4) intercity passenger rail access to airports: a case study at the Milwaukee airport; 5) development of a background complexity assessment tool; 6)identifying pavement preservation treatments suitable for performance-related specifications; and 7)arsenic content and retro-reflectivity of glass beads used in pavement markings."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth281729/
The design of a comprehensive microsimulator of household vehicle fleet composition, utilization, and evolution
Date: January 2012
Creator: Paleti, Rajesh.
Description: "The report describes a comprehensive vehicle fleet composition, utilization, and evolution simulator that can be used to forecast household vehicle ownership and mileage by type of vehicle over time. The components of the simulator are developed in this research effort using detailed revealed and stated preference data on household vehicle fleet composition, utilization, and planned transactions collected for a large sample of households in California. Results of the model development effort show that the simulator holds promise as a tool for simulating vehicular choice processes in the context of activity-based travel microsimulation model systems."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth281731/
Reviewing, analyzing and updating marketing strategies to increase public transit ridership
Date: January 2012
Creator: Lewis, Carol Abek
Description: This report explains that with the fuel prices increasing and environmental impact getting special attention, it is important to increase our knowledge of the best marketing practices to attract riders to public transits. In order to move people to public transit a deeper analysis of the decision variables and a strategy to promote public transit is required.
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth303640/
An investigation of the effects of reading and writing text-based messages while driving
Date: August 2011
Creator: Yager, Christine
Description: "Previous research, using driving simulation, crash data, and naturalistic methods, has begun to shed light on the dangers of texting while driving."
Contributing Partner: UNT Libraries Government Documents Department
Permallink:texashistory.unt.edu/ark:/67531/metapth303502/