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 19 of 19 for “"Road design"”.
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The determination of road sections by computer for use in road design
A brief resume of ,recent developments in the design of roads is given with special reference to the increasing part played by automated methods by means of which higher degrees of optimization may be achieved. Flow charts illustrating road design demonstrate the relative importance of the …
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Ableitung einer Wechselbeziehung zwischen Griffigkeit, Geschwindigkeit und Haltesichtweite anhand realer Bremsvorgänge
… velocity and stopping sight distance for road design purposes based on actual decelerations. In a first step, tests are performed at which a vehicle travelling with different selected speeds is being brought to a halt on wetted road sections with various skid resistance properties. Through …
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Foundation Design of Low Volume Roads: Evaluation and Performance
<p>A majority of roads in the state of SD are low volume roads (LVRs). The SDDOT has developed simplified methods for LVR pavement thickness selection. These guides allow users to obtain recommended asphalt surfacing and base course layer thickness based on the subgrade support and the average …
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Influence of Street Trees on Frequency of Vehicle Collisions in Seattle
… like tree placement, density, and proximity to roadways play a significant role in influencing this relationship. Therefore, it recommended that to better understand this observation, other factors such as driver behavior, road design, and traffic patterns must also be considered, as they may …
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The use of onboard diagnostics to reduce emissions in automobiles
… show the different emissions levels on different roads. Although the plan is to develop a cheaper OBD II scanner and GPS unit to place on a few cars, an already existing scanner and GPS receiver has been used to begin collecting data for analysis, which will be discussed in this paper. The data …
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From marginalized to optimized : re-envisioning urban highway corridors
… that cities must decide whether to rebuild or redesign, and how. The increasing numbers of projects and multiple proposals for highway removal or shrinkage speak to a larger trend of right-sizing and quality of road design rather than a sole focus on throughput. This trajectory has been …
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Identification of hazardous road location based on design consistency and accident prediction model federal road in Johor
Every year road accident in Malaysia is kept rising, especially road accidents occur in between a collision with passenger cars, other motorcycles and single-motorcycle accidents. In early 2016, Johor has been mentioned as the highest ranking hazardous road accident especially federal roads. …
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Multi-body dynamic and finite element modeling of ultra-large dump truck - haul road interactions for machine health and haul road structural integrity
… trucks impose high dynamic loads on haul roads. The dynamic loads are exacerbated by road surface roughness and truck over-loading. The dynamic forces also subject trucks to high torsional stresses, which affect truck health. Current haul road response models are 2D and use static …
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Automated Spatial Progress Monitoring for Asphalt Road Construction Projects
… progress monitoring. Progress is measured on road construction sites in terms of completion percentages at various activity and work package levels. This percentage is then used to identify schedule deviations and support the earned value analysis often used as the baseline for contractor …
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Influence of post-cyclic loading on hemic peat
… that arises from common problems construction of roads, housing and embankment construction with regard to peat are stability, settlements and major problems were encountered especially on deep peat. For many years, in road design as an example, static loading method was applied in road designed …
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An analysis of patterns and trends of road traffic injuries and fatalities in Vhembe District, Limpopo Province, South Africa
Road transport safety is challenging globally, especially in developing countries, where it affects both road users and governments. The aim of road traffic safety is to ensure a reduction or total eradication of road fatalities and other injuries that are related to road accidents resulting from …
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Black spot analysis : infrastructure impacts on black spots in the Western Cape N1
… environmental factors that contribute towards road accidents. The role of infrastructure in improving road safety is the primary focus of the research, as infrastructure influences the driving experience. Road design and geometry are important for the consistency of highway performance. Road …
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Assessment of Improvement in Unpaved Roadway Performance Using 3D Geogrids Under Cyclic Loading
… the performance in both paved and unpaved road construction. This research focuses on quantifying the performance and optimizing the design of unpaved roadways using the results from an extensive cyclic triaxial testing program. Twenty-seven cyclic triaxial tests were performed, consisting …
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Development of deformable tire-pavement interaction: contact stresses and rolling resistance prediction under various driving conditions
… in costly decisions, such as poor structural road design, incorrect damage prediction, and inappropriate adoption of maintenance/rehabilitation techniques. Moreover, accurate analysis of the tire-pavement system improves predictions of rolling resistance, fuel consumption, and greenhouse gas …
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Characterizing Bicyclists Behavior in Overtaking Scenarios Over Different Road Infrastructures
… for testing bicyclist-vehicle interactions on roadways using virtual reality (VR). VR testing was conducted to capture and analyze bicyclist dynamics. Most fatal bicycle crashes occurred when motorists overtook cyclists, especially when cyclists are travelling in a travel lane in the same …
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CHARACTERIZATION OF CRUSHED PORTLAND CEMENT CONCRETE RUBBLE AGGREGATE FOR URBAN ROADS
… for maintaining approximately 1,100 km of roads including locals, collectors, arterials, and freeways. With the aged state of the road infrastructure, increasing budget constraints limit the City’s ability to maintain existing road infrastructure to an acceptable level of service and to …
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The environmental fate of traffic-derived metals in a section of Wet Tropics World Heritage Area (WTWHA), Far North Queensland (FNQ)
… metals (Cd, Cu, Pb, Ni, Zn, Pd and Pt) in roadside environments in a section of the wet-dry tropics in northern Australia? Specific areas investigated included the Kuranda Range Road, northwest of the city of Cairns; the Captain Cook Highway at the base of the Kuranda Range Road; and …
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Analysis of right-turn lane length in left-hand traffic countries at signalised intersections of urban roads
Analysis of the right turn lane length of urban roads in left-hand traffic countries, such as Australia, UK and India (left-turn lane length in right-hand traffic countries such as USA), at signalised intersections encounters two main geometric features namely, deceleration length and storage …