World oil demand is projected to increase more than 40% by 2030 which is mainly from Asian countr... more World oil demand is projected to increase more than 40% by 2030 which is mainly from Asian countries like China and India, where transportation industries are rapidly expanding. Transportation accounts for almost 20% of the world's energy consumption and more than 50% of the consumption of liquid fuels. In the year 2030, the transportation sector alone will consume the same amount of liquid fuel as that consumed by all sectors in 2003; this fact necessitates development of the travel demand modelling based on fuel consumption. Consequently the purpose of this research is to investigate the impact of fuel consumption patterns on travel demand estimation. This paper evaluates and calibrates travel demand estimation and its relation to fuel consumption by CUBE software for the city of Shiraz, with use of data which was provided by Sharif University for the centre of Fars province, Iran in 1999. This research proves that the basic role and model relationships fits well with vehicle ...
ABSTRACT Recent interest in developing activity-based models of transport demand has encouraged r... more ABSTRACT Recent interest in developing activity-based models of transport demand has encouraged research on the design and administration of activity diaries. Activities occur in time and space. Traditionally, these two dimensions have been bifurcated. Time-use diary researchers focused oil activities whereas travel diary researchers centered on trips. However a combination of both time and travel diaries (time-space diary) could bring Out the potential for alternative diary formats. This paper focuses on the development of a time-space diary describing the experience of a pilot survey conducted to identify the best data collection technique. Special attention has also been given to address the problem of nonresponse and missing data. The economic and efficiency analysis is also reported. The future modifications in the survey instrument and method of administration for the final survey are also discussed. Overall, the formulated time-space diary performed better than the conventional travel diary and also the face-to-face survey method emerged as the best way of administration.
Abstract A grid based modelling approach akin to cellular automata (CA) is adopted for heterogene... more Abstract A grid based modelling approach akin to cellular automata (CA) is adopted for heterogeneous traffic flow simulation. The road space is divided into a grid of equally sized cells. Moreover, each vehicle type occupies one or more cell as per its size unlike CA ...
Abstract: In this paper, the authors examine the emerging roles of the private sector in transpor... more Abstract: In this paper, the authors examine the emerging roles of the private sector in transportation infrastructure programs/asset management strategies in India. Roles identified vary from those of a financier to an operator that may result in successful joint ...
Abstract: This paper describes how risk Assessment is the identification of possible risks entail... more Abstract: This paper describes how risk Assessment is the identification of possible risks entailed in a project, the assessment of their likelihood and impact, and the creation of methods to avoid or reduce them. Traditionally, the economic viability of a project is decided on the basis of the methods of IRR, Benefit-Cost Value and Net Present Value (NPV), which take into consideration the discounted costs and benefits involved in the project. However, different uncertainties and risks, which may get involved in spite of proper forecast at ...
Environmental impact analysis (EIA) has been developed as a tool to address environmental issues ... more Environmental impact analysis (EIA) has been developed as a tool to address environmental issues in decisionmaking. In EIA, the environment is viewed as a system comprising human beings, flora and fauna, soil, water, air, climate, and the landscape; EIA is also concerned with interaction between these components. This chapter discusses EIA components and processes that are relevant to transport systems. Various impacts of transport projects on air quality, socioeconomics, ecology, and travel are considered and quantified so that alternative plans can be compared for their relative impact on the environment. The individual indices are converted to a combined environmental index by which different transport options can be compared. The indices can also be compared with relevant standards, and if the impact value exceeds a standard, appropriate mitigation measures can be suggested. Each of these components is dealt with in some detail.
World oil demand is projected to increase more than 40% by 2030 which is mainly from Asian countr... more World oil demand is projected to increase more than 40% by 2030 which is mainly from Asian countries like China and India, where transportation industries are rapidly expanding. Transportation accounts for almost 20% of the world's energy consumption and more than 50% of the consumption of liquid fuels. In the year 2030, the transportation sector alone will consume the same amount of liquid fuel as that consumed by all sectors in 2003; this fact necessitates development of the travel demand modelling based on fuel consumption. Consequently the purpose of this research is to investigate the impact of fuel consumption patterns on travel demand estimation. This paper evaluates and calibrates travel demand estimation and its relation to fuel consumption by CUBE software for the city of Shiraz, with use of data which was provided by Sharif University for the centre of Fars province, Iran in 1999. This research proves that the basic role and model relationships fits well with vehicle ...
ABSTRACT Recent interest in developing activity-based models of transport demand has encouraged r... more ABSTRACT Recent interest in developing activity-based models of transport demand has encouraged research on the design and administration of activity diaries. Activities occur in time and space. Traditionally, these two dimensions have been bifurcated. Time-use diary researchers focused oil activities whereas travel diary researchers centered on trips. However a combination of both time and travel diaries (time-space diary) could bring Out the potential for alternative diary formats. This paper focuses on the development of a time-space diary describing the experience of a pilot survey conducted to identify the best data collection technique. Special attention has also been given to address the problem of nonresponse and missing data. The economic and efficiency analysis is also reported. The future modifications in the survey instrument and method of administration for the final survey are also discussed. Overall, the formulated time-space diary performed better than the conventional travel diary and also the face-to-face survey method emerged as the best way of administration.
Abstract A grid based modelling approach akin to cellular automata (CA) is adopted for heterogene... more Abstract A grid based modelling approach akin to cellular automata (CA) is adopted for heterogeneous traffic flow simulation. The road space is divided into a grid of equally sized cells. Moreover, each vehicle type occupies one or more cell as per its size unlike CA ...
Abstract: In this paper, the authors examine the emerging roles of the private sector in transpor... more Abstract: In this paper, the authors examine the emerging roles of the private sector in transportation infrastructure programs/asset management strategies in India. Roles identified vary from those of a financier to an operator that may result in successful joint ...
Abstract: This paper describes how risk Assessment is the identification of possible risks entail... more Abstract: This paper describes how risk Assessment is the identification of possible risks entailed in a project, the assessment of their likelihood and impact, and the creation of methods to avoid or reduce them. Traditionally, the economic viability of a project is decided on the basis of the methods of IRR, Benefit-Cost Value and Net Present Value (NPV), which take into consideration the discounted costs and benefits involved in the project. However, different uncertainties and risks, which may get involved in spite of proper forecast at ...
Environmental impact analysis (EIA) has been developed as a tool to address environmental issues ... more Environmental impact analysis (EIA) has been developed as a tool to address environmental issues in decisionmaking. In EIA, the environment is viewed as a system comprising human beings, flora and fauna, soil, water, air, climate, and the landscape; EIA is also concerned with interaction between these components. This chapter discusses EIA components and processes that are relevant to transport systems. Various impacts of transport projects on air quality, socioeconomics, ecology, and travel are considered and quantified so that alternative plans can be compared for their relative impact on the environment. The individual indices are converted to a combined environmental index by which different transport options can be compared. The indices can also be compared with relevant standards, and if the impact value exceeds a standard, appropriate mitigation measures can be suggested. Each of these components is dealt with in some detail.
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Papers by Sunder Dhingra