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Articles 1 - 7 of 7
Full-Text Articles in Civil and Environmental Engineering
A Multi-Objective Decision-Making Framework For Transportation Investments, Mashrur Chowdhury, Pulin Tan
A Multi-Objective Decision-Making Framework For Transportation Investments, Mashrur Chowdhury, Pulin Tan
Mashrur Chowdhury
This paper presents a framework based on multi-objective optimization that can be used to generate and analyze the most desirable transportation investment options based on their objectives and constraints. The framework, which is based on the surrogate worth trade-off analysis, could be applied to both discrete or continuous decision-problem scenarios. In a discrete problem, a predefined set of alternatives is available, whereas continuous problems are not characterized by a predefined set of alternatives. This framework was applied with the data generated for a Capital Beltway Corridor investment study. The multi-objective decision-making framework was found to be adaptable to this typical …
Transit System Evaluation Process: From Planning To Realization, K Bartman, Jennifer Ogle, Mashrur Chowdhury, Anne Dunning
Transit System Evaluation Process: From Planning To Realization, K Bartman, Jennifer Ogle, Mashrur Chowdhury, Anne Dunning
Mashrur Chowdhury
Many frameworks exist to help transit agencies plan, operate, and monitor the performance of transit in rural and urban communities. No framework integrates these three critical business practices into one coherent and flexible framework useful to rural and small-sized cities. The primary objective of this research was to integrate planning, operations, and performance measurement activities into a framework designed to evaluate transit in the context of overall mobility. By combining planning, evaluation, and performance monitoring processes, a succinct framework useful to transit agencies and planners was created. In addition to city entities, colleges and universities operating or contracting transit systems …
Attack Of The Drones, Wayne Sarasua, Ryan Eckenrode, James Mattox, Jennifer Ogle, Mashrur Chowdhury
Attack Of The Drones, Wayne Sarasua, Ryan Eckenrode, James Mattox, Jennifer Ogle, Mashrur Chowdhury
Mashrur Chowdhury
South Carolina is just completing a significant roadwork program where bonds have been leveraged so that 27 years of maintenance and construction activities could be completed in just seven years. During this period, the number of South Carolina interstate work-zone-related crashes and fatalities has been rising, with the state accounting for nearly 10% of the nation’s work-zone fatalities. The number of crashes in work zones in South Carolina nearly tripled in five years, increasing from 677 in 1998 to 2,601 in 2003. In all of these years, a leading cause of vehicle crashes is driving too fast for conditions. Because …
Transportation Security Framework For A Medium-Sized City, Ryan Fries, Mashrur Chowdhury, Anne Dunning
Transportation Security Framework For A Medium-Sized City, Ryan Fries, Mashrur Chowdhury, Anne Dunning
Mashrur Chowdhury
Terrorist attacks have made security preparedness unquestionably necessary in all cities. While major metropolitan areas have long recognized that their global visibility has required strong security operations, many medium-sized cities, specifically those of the U.S. and European Union, now face the need to establish transportation security frameworks for the first time. This paper assesses the resources available to help medium-sized cities begin the task of creating such systems. This assessment presents infrastructure risk assessment tools, identifies infrastructure and funding resources, and creates a process for developing a security framework to connect agencies responsible for transportation security in these metropolitan areas. …
Using Gis-Based, Hitchcock Algorithm To Optimize Parking Allocations For Special Events, Wayne A. Sarasua, Prashant Malisetty, Mashrur Chowdhury
Using Gis-Based, Hitchcock Algorithm To Optimize Parking Allocations For Special Events, Wayne A. Sarasua, Prashant Malisetty, Mashrur Chowdhury
Mashrur Chowdhury
Clemson, a small college town in South Carolina, deals with a massive over-saturation of its transportation system during special events, especially during home football games, resulting in total system failure. This research has developed a methodology to optimize parking, using a Geographic Information System (GIS)-based transshipment algorithm, and it has produced great time savings compared with the individual, “manual” efforts of thousands of drivers attempting to find spaces where available. As such, this research constitutes an effective implementation of the Hitchcock Transportation Algorithm for solving a transshipment problem applied to parking lot distribution. Because the Hitchcock Algorithm considers the network …
Integrated Traffic And Communication Performance Evaluation Of An Intelligent Vehicle Infrastructure Integration (Vii) System For Online Travel Time Prediction, Yongchang Ma, Mashrur Chowdhury, Adel Sadek, Mansoureh Jeihani
Integrated Traffic And Communication Performance Evaluation Of An Intelligent Vehicle Infrastructure Integration (Vii) System For Online Travel Time Prediction, Yongchang Ma, Mashrur Chowdhury, Adel Sadek, Mansoureh Jeihani
Mashrur Chowdhury
This paper presents a framework for online highway travel time prediction using traffic measurements that are likely to be available from Vehicle Infrastructure Integration (VII) systems, in which vehicle and infrastructure devices communicate to improve mobility and safety. In the proposed intelligent VII system, two artificial intelligence (AI) paradigms, namely Artificial Neural Networks (ANN) and Support Vector Regression (SVR), are used to determine future travel time based on such information as current travel time, VII-enabled vehicles’ flow and density. The development and performance evaluation of the VII-ANN and VII-SVR frameworks, in both of the traffic and communications domains, were conducted, …
Energy Consumption Reduction Strategies For Plug-In Hybrid Electric Vehicles With Connected Vehicle Technology In An Urban Environment, Parth Bhavsar, Yiming He, Mashrur Chowdhury, Ryan Fries, Andrew Shealy
Energy Consumption Reduction Strategies For Plug-In Hybrid Electric Vehicles With Connected Vehicle Technology In An Urban Environment, Parth Bhavsar, Yiming He, Mashrur Chowdhury, Ryan Fries, Andrew Shealy
Mashrur Chowdhury
Automobile manufacturers have introduced plug-in hybrid electric vehicles (PHEVs) to reduce fossil fuel consumption. This paper details three optimization strategies that can be utilized to further minimize energy consumption of PHEVs through an information exchange between PHEVs and infrastructure agents supported by the connected vehicle technology (CVT). While an earlier research by the authors focused on a freeway scenario, this study developed strategies for an urban scenario in which frequent ‘stop-and-go’ conditions exist. Three strategies were considered in this study based on different types of information availability using CVT; only signal timing information was available in Strategy One, only headway …