Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 43 for “"Work Zone"”.
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Work Zone Analysis Under Detour Settings
A new approach of work zone delay cost analysis is developed to understand the implications of detours. This method, unlike any of the previous methods, is based on the impacts within the transportation network and let users find the shortest paths which will eventually come to equilibrium. The …
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Optimizing work zone practices for highway construction projects
Recent studies indicate that work zones suffer from an increasing trend of deaths and injuries in and around the highway construction areas with an average of 745 fatalities and 40,700 severe injuries per year. To control and minimize work zone fatalities and injuries, the Federal Highway …
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Traffic estimation, sensing, and control in work zone environments
… safety and mobility concerns in freeway work zones. Smart work zone systems are composed of sensors, communication technologies, and data processing algorithms that are used to monitor and disseminate critical information such as congestion and severe slowdowns. Though a large number of …
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Highway work zone capacity estimation using field data from Kansas
… highway sections, especially sections within work zones. This study filled that void for rural highways in Kansas. This study estimated capacity of rural highway work zones in Kansas. Six work zone locations were selected. An average of six days’ worth of field data was collected, from …
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A Connected Work Zone Hazard Detection System for Highway Construction Work Zones
Roadway construction workers have to work in close proximity to construction equipment as well as high-speed traffic, exposing them to an elevated risk of collisions. This research aims to develop an innovative holistic solution to reduce the risk of collisions at roadway work zones. To this end, a …
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Analyzing and Modeling the Effects of Independent Variables on Texas Severe Work Zone Crashes
Previous literature and research on work zone crashes seem to reach a similar conclusion that frequency and severity of crashes in work zones is dependent on causative factors that range from Endogenous factors (which in this study will be referred to as factors that are components of the work zone …
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An artificial neural network model for predicting freeway work zone delays with big data
… mobility impact so that a cost-effective work zone schedule and an efficient traffic management plan can be developed. Therefore, the development of a sound model for predicting delays or road users is desirable. A comprehensive literature review on existing work zone delay prediction …
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Optimizing the construction planning of highway work zones
Highway work zones often cause traffic congestions and delays resulting in increased road user delay, traffic crashes, and vehicle emissions. The Federal Highway Administration (FHWA) and state DOTs are continuously seeking to improve work zone safety and mobility. To accomplish this, the layout of …
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Queue predictions at temporary work zones: modification and testing of an existing spreadsheet
… predict whether a queue will form at a freeway work zone is the Excel-based "Lane Rental Model" developed at the Oklahoma Department of Transportation (OkDOT) and whose work zone flow capacity values are based on the 1994 Highway Capacity Manual (HCM, 1994). The scope of this research pertains …
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Evaluating the use of steady burn warning lights on drums for workzone safety
… BURN WARNING LIGHTS ON DRUMS </p> <p>FOR WORK ZONE SAFETY </p> <p>by</p> <p>PRASAD LAKSHMI VARA NANNAPANENI</p> <p>May 2011</p> <p>Advisor: Dr. Timothy Gates</p> <p>Major: Civil Engineering </p> <p>Degree: Doctor of Philosophy</p> <p> Roadway maintenance and repair has become increasingly …
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Real-Time Advanced Warning and Traffic Control Systems for Work Zones: Examination of Requirements and Issues
… Research identified traffic safety, work zone safety and traffic control, trucking issues, and intercity traveler information needs as important issues that deserve attention on the I-81 Corridor in Virginia. Analysis of work zone accident statistics showed a need for real-time …
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Evaluation of knowledge transfer in an immersive virtual learning environment for the transportation community
… lives in a highway construction or maintenance work zone (National Work Zone Safety Information Clearinghouse, 2010). Since the year 2003, 6,438 individuals have been killed in a highway construction or maintenance work zone, which is approximately 805 deaths per calendar year (National Work …
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Effect of pavement surface properties on life cycle cost analysis
… transportation operation and when there is a work zone present. Costs that occur during normal operating conditions are due to pavement surface profile, while costs that occur during work zone activities are due to agency decisions on work zone conditions. In traditional LCCA, it is assumed …
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Tool For Calculating User Delay Cost Associated With Urban Arterial Construction Zone
Roadway construction work zone imposes travel delay on the road users. The monetary cost of the delay is called user delay cost (UDC). Limited work has been done on quantifying UDC in Canada and their focus were rural highways. If there is a realistic estimate of UDC, it could lead to less schedule …
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Optimized scheduling of highway work zones
… of traffic operation and maintenance work, and minimize the total project cost (i.e., agency cost and road user cost) by optimizing work zone schedules. This dissertation focuses on the maintenance projects on multiple-lane highways. The objective total cost function is formulated …
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Impact of highway work zones on traffic crashes: A case study in Michigan
… make roads and highways more safe, construction zones must become inherently less safe in the process. There is a high cost to taxpayers and drivers, as work zones experience a significant amount of crashes and fatalities each year. To mitigate some of the factors that contribute to these …
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Development of a User Cost Estimation Procedure for Work Zones.
Work zones associated with highway construction projects create localized bottlenecks where the average traffic speed is reduced and queues are formed, thus causing increased costs as a result of the additional time and fuel needed to traverse the work zone. These user costs can be estimated and …
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A simulator study to evaluate Emergency Alert Lighting system for truck mounted attenuators
… (EAL) system configurations used on MoDOT work vehicles. Two warning light colors (amber and white) in conjunction with modified horn timing (delay vs. no delay) were compared during daytime and nighttime scenarios. Participants were asked to drive a freeway scenario to observe whether the …
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Traffic impact assessment and mitigation strategies for disruptions
… conditions affected by disruptive events such as work zones, incidents, and hurricanes. Using a combination of field data and simulation experiments, this research tried to address the relationship between disruptive events and their impact on traffic conditions and driver behavior. The first half …
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