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Now showing items 1-20 of 26
Safety modeling for two certain urban intersection types, HSM calibration, and crash severity distribution
(University of Missouri--Columbia, 2017)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] According to several years' official crash data, a significant proportion of crashes happened at roadway intersections in Missouri. Of those intersection ...
Empirical study of freeway interchange crash characteristics and influence areas
(University of Missouri--Columbia, 2016)
Factors that affect drivers at interchanges are various and include changing lanes, changes in speed limits, and lengths of speed-change lanes. State Departments of Transportation (DOTs), local authorities, and transportation ...
Driving simulator use and calibration for work zone merge sign evaluation
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Work zones on highways have the potential to increase crash risk; therefore, efficient and noticeable signs play a critical role in enhancing highway ...
Implementing data-driven decisions for asset management in local communities
(University of Missouri--Columbia, 2016)
The successful implementation of Transportation Asset management (TAM) by local governments facilitates the optimization of limited resources. The use of a data-driven TAM program helps to identify and prioritize needs, ...
Alternative bicycle pavement marking studies using a bicycle simulator
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The past decade has seen increased public interest in sustainable transportation modes in the U.S. However, there is a relative lack of guidance regarding ...
Safety evaluation of roundabouts at freeway ramp terminals and HSM calibration
(University of Missouri--Columbia, 2017)
Although the conventional understanding is that roundabouts have the potential to improve safety at intersections, particularly by reducing more severe crash types, there is limited knowledge on their safety impacts when ...
Maintenance of traffic for innovative geometric design work zones and calibrating highway safety manual for Missouri interchanges
(University of Missouri--Columbia, 2016)
As the nation's population continues to grow, the users of highway network face increased safety risks, delays and congestion. Budget constraints at many public agencies frequently make infeasible the construction of new ...
Automating traffic studies at modern roundabouts: a feasibility study
(University of Missouri--Columbia, 2007)
The modern roundabout is growing in popularity as an alternative intersection design, however it presents engineers a new quandary. At a traditional intersection, traffic movements may more easily counted given vehicle ...
Safety evaluation of large truck-passenger vehicle interactions and synthesis of safety corridors
(University of Missouri--Columbia, 2007)
Insights into the nature of large truck-passenger car interactions and the understanding of safety corridors can lead to improvements in the safety and efficiency of freeway operations. One main contribution of this thesis ...
Pattern recognition based microsimulation calibration and innovative traffic representations
(University of Missouri--Columbia, 2008)
Even though calibration techniques for traffic simulation abound, this dissertation presents the first mathematical formalization using representations and invariants. The calibration is defined succinctly over three levels ...
A study of ADA public rights-of-way accessibility guideline impacts
(University of Missouri--Columbia, 2013)
The aim of this research is to improve safety and mobility for the disabled community by examining the impacts of the Public Rights-of-Way Accessibility Guidelines (PROWAG). Another aim is to identify the economic consequent ...
Red light running at traffic circles: estimation and evaluation of countermeasures effectiveness
(University of Missouri--Columbia, 2013)
The complicated legacy design of traffic circles results in operational and safety deficiencies. This type of intersection design is commonly used at major roadways in Cochabamba, Bolivia. Traffic circles are intended to ...
Operational analysis of cross-country trips on rail in Vietnam
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The analysis of current transit conditions is vital for planning and forecasting future transit demand. Previous analyses of Vietnam railways have ...
Artificial intelligence techniques for modeling dynamic traffic behavior at bottlenecks
(University of Missouri--Columbia, 2014)
Speed-based safety analysis for work zones
(University of Missouri--Columbia, 2011)
Speed is one of the characteristics of traffic flow that affect accident rates and severity near work zones. Approximately 25% fatal crashes in work zones involved high speed. In speed-related work zone traffic safety ...
Temporary traffic control for mobile and innovative geometric design work zones
(University of Missouri--Columbia, 2015)
Work zone safety and operations are of growing concern through recent years. With increasing traffic demand on the transportation system and advancing technology raising new situations, such as texting while driving and ...
Use of incentive/disincentive contracting to mitigate work zone traffic impacts
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Incentive/disincentive clauses (I/D) are designed to award payments to contractors if they complete work ahead of schedule and to deduct payments if ...
Simulator study of ridesharing pickup and dropoff area design and evaluation of benefits and applications of tethered surveillance drones (TSDS)
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI--COLUMBIA AT REQUEST OF AUTHOR.] Technology is reshaping transportation. An example is mobile apps that enable the growing ridesharing industry. When combined with another ...
Modeling pedestrian crash severity in St. Louis using random forests and mixed logit techniques
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI--COLUMBIA AT REQUEST OF AUTHOR.] The pedestrian-vehicle crashes in the City of St. Louis is a major concern due to the high magnitude of injuries and fatalities compared to ...
Simulator and field study of effectiveness of speed management methods in work zone in Missouri
(University of Missouri--Columbia, 2022)
The objective of this research is to examine the effectiveness of six speed countermeasures in reducing vehicle speeds in work zones. Speed countermeasures such as law enforcement (active and passive), speed trailer ...