The Experts below are selected from a list of 84849 Experts worldwide ranked by ideXlab platform
Kin Keung Lai - One of the best experts on this subject based on the ideXlab platform.
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analysis of Road Transportation energy consumption demand in china
Transportation Research Part D-transport and Environment, 2016Co-Authors: Jian Chai, Shouyang Wang, Kin Keung LaiAbstract:Abstract In this paper, we first analyze the historical trends in Road Transportation energy consumption and GDP in developed economies to find out the development characteristics of Road energy consumption. The two indexes present obvious ‘S’ type patterns. Then, in order to explore the current status and future trend of Road energy Transportation in China, we employ path analysis to analyze the impact mechanism of the factors related to Road Transportation energy consumption. Next, we adopt the BMA model to select the core factors related to Road Transportation energy consumption in China, and on the basis of the model selection as well as univariate (ETS & ARIMA models) and multivariate (multiple regression) models, the Road Transportation energy consumption is analyzed and forecast. The results showed that the Road Transportation energy consumption rises by 0.33 percent for every percent increase in GDP and by 1.26 percentage points for every percent increase in urbanization. The Road Transportation energy consumption in China is expected to reach around 226181.1 ktoe by the end of 2015, and about 347,363 ktoe by 2020.
R J Crookes - One of the best experts on this subject based on the ideXlab platform.
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energy demand and emissions from Road Transportation vehicles in china
Progress in Energy and Combustion Science, 2010Co-Authors: Xiaoyu Yan, R J CrookesAbstract:Rapidly growing energy demand and emissions from China's Road Transportation vehicles in the last two decades have raised concerns over oil security, urban air pollution and global warming. This rapid growth will be likely to continue in the next two to three decades as the vehicle ownership level in China is still very low. The current status of China's Road transport sector in terms of vehicles, infrastructure, energy use and emissions is presented. Mitigation measures implemented and those that can reasonably be expected to be adopted in the near future are analysed. Recent studies exploring the future trends of Road vehicle energy demand and emissions under various strategies are reviewed. Moreover, those studies which assessed various fuel/propulsion options in China from a life cycle perspective are examined to present an overview of the potential for reducing energy use and emissions. Recommendations for further developments are also made. It is concluded that comprehensive and appropriate strategies will be needed to minimise the adverse impacts of China's Road vehicles on energy resources and the environment. Fortunately, China appears to be heading in this direction.
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life cycle analysis of energy use and greenhouse gas emissions for Road Transportation fuels in china
Renewable & Sustainable Energy Reviews, 2009Co-Authors: Xiaoyu Yan, R J CrookesAbstract:Life cycle analysis is considered to be a valuable tool for decision making towards sustainability. Life cycle energy and environmental impact analysis for conventional Transportation fuels and alternatives such as biofuels has become an active domain of research in recent years. The present study attempts to identify the most reliable results to date and possible ranges of life cycle fossil fuel use, petroleum use and greenhouse gas emissions for various Road Transportation fuels in China through a comprehensive review of recently published life cycle studies and review articles. Fuels reviewed include conventional gasoline, conventional diesel, liquefied petroleum gas, compressed natural gas, wheat-derived ethanol, corn-derived ethanol, cassava-derived ethanol, sugarcane-derived ethanol, rapeseed-derived biodiesel and soybean-derived biodiesel. Recommendations for future work are also discussed.
Yi Wang - One of the best experts on this subject based on the ideXlab platform.
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Scenario Analysis of Urban Road Transportation Energy Demand and GHG Emissions in China—A Case Study for Chongqing
Sustainability, 2018Co-Authors: Xianchun Tan, Yuan Zeng, Yi WangAbstract:This study, using Chongqing City of China as an example, predicts the future motor vehicle population using the Gompertz Model and the motorcycle population using the piecewise regression model, and predicts and analyzes fuel consumption and greenhouse gas (GHG) emissions of motor vehicles from 2016 to 2035 based on the bottom-up method under different scenarios of improving the fuel economy of conventional vehicles, promoting alternative fuel vehicles, and the mixed policy of the above two policy options. The results indicate that the total population of motor vehicles in Chongqing will increase from 4.61 million in 2015 to 10.15 million in 2035. In the business-as-usual scenario, the Road-Transportation energy demand in Chongqing will keep increasing from 2015 and will peak in 2030, before it begins to decline by 2035. The trends for the tank to wheel (TTW) and well to wheel (WTW) GHG emissions are similar to that of energy demand. The WTW GHG emissions will increase from 24.9 Mt CO 2 e in 2016 to 50.5 Mt CO 2 e in 2030 and will then gradually decline to 48.9 Mt CO 2 e in 2035. Under the policy scenarios of improving fuel economy of conventional fuel passenger cars, promoting alternative fuel vehicles, and their mixed policy, direct energy consumption and TTW and WTW GHG emissions from 2016 to 2035 will be reduced to different levels. It is also found that the two types of policies have a hedging effect on the direct energy-consumption saving, TTW, and WTW GHG emission reductions. Sensitivity analysis of key parameters and policy settings is conducted to investigate the impact of their changes on the vehicle population projection, direct energy demand, and WTW GHG emissions. Some policy implications are suggested to provide reference for the formulation and adjustment of Chongqing’s, or even China’s, low-carbon Road Transportation policies in the future based on the analysis results.
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dynamic traffic assignment a review of the methodological advances for environmentally sustainable Road Transportation applications
Transportation Research Part B-methodological, 2018Co-Authors: Yi Wang, W Y Szeto, Ke Han, Terry L FrieszAbstract:Abstract The fact that Road Transportation negatively affects the quality of the environment and deteriorates its bearing capacity has drawn a wide range of concerns among researchers. In order to provide more realistic traffic data for estimations of environmental impacts, dynamic traffic assignment (DTA) models have been adopted in Transportation planning and traffic management models concerning environmental sustainability. This review summarizes and examines the recent methodological advances of DTA models in environmentally sustainable Road Transportation applications including traffic signal control concerning vehicular emissions and emission pricing. A classification of emission estimation models and their integration with DTA models are accordingly reviewed as supplementary to the existing reviews. Finally, a variety of future research prospects of DTA for environmentally sustainable Road Transportation research are discussed. In particular, this review also points out that at present the research about DTA models in conjunction with noise predictive models is relatively deficient.
K. A. Subramanian - One of the best experts on this subject based on the ideXlab platform.
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sustainable development of Road Transportation sector using hydrogen energy system
Renewable & Sustainable Energy Reviews, 2015Co-Authors: Bheru Lal Salvi, K. A. SubramanianAbstract:This study reviews the main problems of high air pollution levels at many urban cities and sustainability of the Transportation fuels, and addressing their control measures using hydrogen energy system. In the world, majority of the Transportation vehicle fleets consume the fuels derived from fossil resources. The development of economy activities indicate the increase in Transportation services resulting in increased fuel consumption and high emissions, especially unregulated emission carbon dioxide, which is a greenhouse gas (GHG). Therefore, utilization of hydrogen as fuel in vehicle fleet would improve energy security and reduce the GHG emission. A feasibility of hydrogen energy system, which includes its resources, production technologies, storage, fuel Transportation, dispensing and utilization, is analysed for the Road Transportation sector.
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Sustainable development of Road Transportation sector using hydrogen energy system
Renewable and Sustainable Energy Reviews, 2015Co-Authors: Bheru Lal Salvi, K. A. SubramanianAbstract:This study reviews the main problems of high air pollution levels at many urban cities and sustainability of the Transportation fuels, and addressing their control measures using hydrogen energy system. In the world, majority of the Transportation vehicle fleets consume the fuels derived from fossil resources. The development of economy activities indicate the increase in Transportation services resulting in increased fuel consumption and high emissions, especially unregulated emission carbon dioxide, which is a greenhouse gas (GHG). Therefore, utilization of hydrogen as fuel in vehicle fleet would improve energy security and reduce the GHG emission. A feasibility of hydrogen energy system, which includes its resources, production technologies, storage, fuel Transportation, dispensing and utilization, is analysed for the Road Transportation sector. In addition to this, the study highlights the technical issues and its control strategy for addressing the problems of the Transportation system using the hydrogen. Moreover, hydrogen is the cleanest fuel, especially when coupled with renewable energy sources. The Road Transportation sector with hydrogen energy system would give the desirable results including high energy efficiency and zero carbon based emission (CO, CO2, HC, PM) resulting in strengthening of sustainability of the system. The Governments of many countries have made ambitious policies and provide strong financial support to research organizations including universities and institutions for development of hydrogen energy system. Many companies express strong interest in the commercialization of hydrogen fuelled vehicles either internal combustion engines based, fuel cell based or hybrid technology.
Natalia Andrienko - One of the best experts on this subject based on the ideXlab platform.
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Applications of Trajectory Data From the Perspective of a Road Transportation Agency: Literature Review and Maryland Case Study
IEEE Transactions on Intelligent Transportation Systems, 2019Co-Authors: Nikola Marković, Przemyław Sekuła, Zachary Vander Laan, Gennady Andrienko, Natalia AndrienkoAbstract:Transportation agencies have an opportunity to leverage increasingly available trajectory datasets to improve their analyses and decision-making processes. However, this data is typically purchased from vendors, which means agencies must understand its potential benefits beforehand in order to properly assess its value relative to the cost of acquisition. While the literature concerned with trajectory data is rich, it is naturally fragmented and focused on technical contributions in niche areas, which makes it difficult for government agencies to assess its value across different Transportation domains. To overcome this issue, this paper explores trajectory data from the perspective of a Road Transportation agency interested in acquiring trajectories to enhance its analysis. This paper provides a literature review illustrating applications of trajectory data in six areas of Road Transportation systems analysis: demand estimation, modeling human behavior, designing public transit, traffic performance measurement and prediction, environment, and safety. In addition, it visually explores 20 million GPS traces in Maryland, USA, illustrating the existing and suggesting new applications of trajectory data.
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applications of trajectory data from the perspective of a Road Transportation agency literature review and maryland case study
arXiv: Machine Learning, 2017Co-Authors: Nikola Markovic, Zachary Vander Laan, Gennady Andrienko, Przemyslaw Sekula, Natalia AndrienkoAbstract:Transportation agencies have an opportunity to leverage increasingly-available trajectory datasets to improve their analyses and decision-making processes. However, this data is typically purchased from vendors, which means agencies must understand its potential benefits beforehand in order to properly assess its value relative to the cost of acquisition. While the literature concerned with trajectory data is rich, it is naturally fragmented and focused on technical contributions in niche areas, which makes it difficult for government agencies to assess its value across different Transportation domains. To overcome this issue, the current paper explores trajectory data from the perspective of a Road Transportation agency interested in acquiring trajectories to enhance its analyses. The paper provides a literature review illustrating applications of trajectory data in six areas of Road Transportation systems analysis: demand estimation, modeling human behavior, designing public transit, traffic performance measurement and prediction, environment and safety. In addition, it visually explores 20 million GPS traces in Maryland, illustrating existing and suggesting new applications of trajectory data.
