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 155 for “"freeway"”.
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Modeling freeway land changing behavior
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Rethinking the Role of Urban Freeway: A Remediation of the I-5 Freeway in Downtown Seattle
Three major problems related to the urban freeway are discussed in this thesis. Firstly, the impact of air and noise pollution on people’s health has been increased by having freeways in cities. Secondly, urban freeways impede social and economic equity since they are most likely to be placed in …
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Safety Evaluation of Freeway Exit Ramps
… exit ramp types on safety performance for freeway diverge areas; and (2) to identify the different factors contributing to the crashes happening on the exit ramp sections. To achieve the research objectives, the research team investigated crash history at 424 sites throughout Florida. The …
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Modeling gap acceptance at freeway merges
… drivers that merge from a ramp into a congested freeway. Merging can be classified into three types: normal, forced and cooperative lane changing. The developed merging model uses a single critical gap function, which incorporates explanatory variables that capture all three types of merging …
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Capacity Modeling of Freeway Weaving Sections
… analytical models that estimate the capacity of freeway weaving sections. The analytical models are developed using simulated data that were compiled using the INTEGRATION software. Consequently, the first step of the research effort is to validate the INTEGRATION lane-changing modeling …
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An observational study of freeway lane-changing behaviour
Every one who has driven on a freeway has observed the phenomenon of lanechanging. This phenomenon is, of course, caused by the desire of most of the drivers not to be in a slow-moving lane. Therefore, the average driver who finds himself in such a lane moves into a neighboring faster lane, usually …
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Modelling freeway pedestrian crossing behaviour in Cape Town
South Africa’s Freeway Management System (FMS) in Cape Town has recorded an alarming increase in pedestrian activity on its freeways in recent years, with a similar trend in (fatal) freeway pedestrian crashes. Both South African and international studies have demonstrated the relevant factors that …
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Design and evaluation of freeway incident detection algorithms
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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Enhancing Freeway Merge Section Operations via Vehicle Connectivity
… induce shock waves that propagate backward. A freeway merge section is one of locations observed a freeway bottleneck, generating freeway traffic congestion. The emerging technologies, such as autonomous vehicles (AVs) and vehicle connectivity, are expected to bring about improvement in …
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Incorporating neural network traffic prediction into freeway incident detection
The efficient operation of an incident management system depend Neural network models have been applied to traffic prediction frequently and even repeatedly because of its superior capability in emulating nonlinear systems. However, these traffic prediction models have not been utilized for …
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Freeway speed-flow relationships under rain and congested conditions
… provided in the HCM (2000) for basic freeway segments as a starting point, new numerical relationships suitable for New Jersey roadways are derived. The new speed-flow relationships can be used to estimate operating speed and level of service (LOS) for New Jersey roadways under rain …
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Safety analysis of freeway interchange speed change lane facilities
… terminal between the entrance ramp and freeway, with the primary purpose of creating a merging area for entering vehicles. The exit speed change lane is an uncontrolled terminal between the freeway and exit ramp, with the primary purpose of creating a diverging area for exiting vehicles. …
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The relationship between land-use and urban freeway interchanges
… exists and, in particular, becomes apparent when freeways and interchanges are introduced into urban areas. There is at present controversy as to whether freeways should be built in urban areas. It is alleged that freeways disrupt urban land-uses, are costly and are, in the long term, ineffective …
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Development of Passenger Car Equivalents for Basic Freeway Segments
… Capacity Manual 2000 reports PCEs for basic freeway segments according to percent and length of grade and proportion of heavy vehicles. Heavy vehicles are considered to be either of two categories: trucks and buses or RVs. For trucks and buses, PCEs are reported for a typical truck with a …
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Freeway Travel Time Estimation Based on Spot Speed Measurements
… speed (arithmetic mean). Chapter 7 focuses on freeway Travel Time Estimation (TTE) algorithms that are based on spot speed measurements. Several TTE approaches are introduced including a traffic dynamics TTE algorithm that is documented in literature. This traffic dynamics algorithm is …
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Development of dynamic recursive models for freeway travel time predictions
Traffic congestion has been a major problem in metropolitan areas, which is caused by either insufficient roadway capacity or unforesceable incidents. In order to promote the efficiency of the existing roadway networks and mitigate the impact of traffic congestion, the development of a sound …
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A dynamic traffic control model for real time freeway operations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Optimal traffic control for a freeway corridor under incident conditions
… delays and causes up to 60 percent of the freeway delay in the United States. When severe incidents occur on freeways, capacity reduction due to lane blockages may cause an extremely high amount of traffic delay. In many cases, parallel surface arterials are available, and provide …
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An Application of Bluetooth Technology to Rural Freeway Speed Data Collection
Bluetooth devices are used in a data collection technique to support the measurement of travel times and speeds by comparing two or more time-stamped positional measurements. The purpose of this research is to develop a Bluetooth device capable of recording the media access control (MAC) addresses …
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A Study of Inclement Weather Impacts on Freeway Free-Flow Speed
… on traffic stream free-flow speeds along freeway sections. The analysis is conducted using weather (precipitation and visibility) and loop detector data (speed) obtained from Baltimore, Minneapolis/St. Paul, and Seattle, US. The results demonstrate that visibility alone has a minimum …
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