Multicriteria Project Portfolio Selection: Case Study for Intelligent Transportation Systems

2003 ◽  
Vol 1848 (1) ◽  
pp. 125-131 ◽  
Author(s):  
M. Reza Ghaeli ◽  
John Vavrik ◽  
Glenyth Nasvadi

Transportation strategies encompass a portfolio of projects in which choices must be made between competing alternatives. An appropriate portfolio of projects is essential for the success and growth of transportation agencies. The introduction and implementation of emerging technologies such as intelligent transportation systems (ITS) increase the need for more effective decision-making approaches and project selection in the coming years. Transportation projects, particularly, have a broad impact on the public and are multicriteria in nature. The projects also involve several elements of risk, such as project success, public acceptance, or public image. Traditional methods of project evaluation such as benefit–cost analysis focus mainly on the financial rewards of projects and do not sufficiently consider multicriteria and risk evaluations in an integrated framework. Development of an objective and systematic methodology that could address the multicriteria nature of the projects and also deal with their risks and rewards is necessary for both private and public agencies. This need is important particularly when new technologies are implemented, information on project impacts is insufficient, and resources are constrained. An integrated project portfolio selection model is introduced based on the well-established methodologies used for multicriteria evaluation and proven concepts used for portfolio selection in the finance discipline. The new methodology significantly facilitates decision making by integrating both the risk and the value of projects. A case study for selecting ITS projects in a public agency is demonstrated. Guidance is provided in nontechnical language for interpreting the outputs of the methodology.

Author(s):  
S. Gregory Hatcher ◽  
James A. Bunch ◽  
Donald L. Roberts

The issues associated with incorporating intelligent transportation systems (ITS) strategies into alternatives analysis planning studies such as major investment studies (MIS), which have emerged since the Intermodal Surface Transportation Efficiency Act was passed in 1991, are discussed. The challenges and implications of including ITS in three of the key steps of the MIS process—problem definition, alternative definition, and analysis—are examined. As context for the specific issues addressed, a case study is presented on incorporating ITS into a corridor planning process that is being conducted using Seattle data. Critical to incorporating ITS elements within an MIS process is developing a problem statement, goals and objectives, and measures of effectiveness that are sensitive to ITS and other operational improvements for the corridor or subarea under study. Traditional MIS processes have focused on facility/service improvements and on average conditions and demand. ITS strategies, on the other hand, aim at improving ( a) operations; ( b) response to nonrecurrent conditions; and ( c) providing better information. To be able to address ITS strategies, the analysis approach used in an MIS should be sensitive to these issues. An illustration of how ITS strategies are being incorporated and evaluated in the Seattle (MIS-like) case study concludes the discussion.


2020 ◽  
Vol 48 (4) ◽  
pp. 377-383
Author(s):  
Evangelos Mitsakis ◽  
Iliani Styliani Anapali

In the recent years Intelligent Transportation Systems and associated technologies have progressed significantly, including services based on wireless communications between vehicles (V2V) and infrastructure (V2I). In order to increase the trustworthiness of these communications, and convince drivers to adopt the new technologies, specific security and privacy requirements need to be addressed, using Vehicular Ad Hoc Networks (VANETs). To maintain VANET′s security and eliminate possible attacks, mechanisms are to be developed. In this paper, previous researches are reviewed aiming to provide information concerning matches between an attack and a solution in a VANET environment.


2011 ◽  
Vol 15 (3) ◽  
pp. 147-160 ◽  
Author(s):  
Yan Zhou ◽  
Glenn Hamilton Evans ◽  
Mashrur Chowdhury ◽  
Kuang-Ching Wang ◽  
Ryan Fries

1998 ◽  
Vol 1635 (1) ◽  
pp. 155-161 ◽  
Author(s):  
Wei Lien Liang ◽  
Michael Kyte ◽  
Fred Kitchener ◽  
Patrick Shannon

A case study on the effects of visibility and other environmental factors on driver speed was conducted as part of an intelligent transportation systems field operational test to reduce accidents caused by sudden changes in visibility levels. Baseline conditions established normal vehicle speeds for passenger cars and trucks. Reduced visibility and winds exceeding 40 km/h were found to be the primary factors affecting driver speed.


2012 ◽  
Vol 8 (1) ◽  
pp. 243-261 ◽  
Author(s):  
Ana F. Carazo ◽  
◽  
Ignacio Contreras ◽  
Trinidad Gómez ◽  
Fátima Pérez ◽  
...  

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