The United States Environmental Protection Agency reports that the transportation sector is responsible for 32% of the total CO2 emissions from combustion of fossil fuels. In 2012, it contributed 27% of total US GHG emissions (U.S. Environmental Protection Agency). As a result, there has been a focus on producing biofuels for the transportation sector as a way to reduce GHG emissions. In 2011, ...

Light transportation systems are not new proposals since their utilization started at dawn of electric energy spreading at industrial level. The light transportation systems class includes tramways, urban and subway metro-systems as well as trolley buses. These systems are intrinsically characterized by low investment costs and high quality service in terms of environmental impact and energy ef...

Public vehicle (PV) systems are promising transportation systems for future smart cities which provide dynamic ride-sharing services according to passengers’ requests. PVs are driverless/self-driving electric vehicles which require frequent recharging from smart grids. For such systems, the challenge lies in both the efficient scheduling scheme to satisfy transportation demands with service gua...

Energy shortage and atmospheric pollution problems are getting more serious in China, and transportation is the main source of energy consumption, pollutants, and carbon emissions. This study combined the activity-based analysis method with emission models, and investigated the influence mechanism of people’s activity travel scheduling on transportation energy consumption and emissions on holid...

Most U.S. energy usage is for electricity production and vehicle transportation, two interdependent infrastructures. The strength and number of the interdependencies will increase rapidly as hybrid electric transportation systems, including plug-in hybrid electric vehicles and hybrid electric trains, become more prominent. There are several new energy supply technologies reaching maturity, acce...

A significant share of future urban energy consumption is predetermined when land-use and urban form are designated. Community Energy Management (CEM) is a sustainable energy strategy which looks at how shaping the built environment and designing urban services in consideration of energy production, distribution and use could affect both the long term demand for energy and the type of energy su...

Many countries are attempting to reduce energy consumption and CO2 emissions while increasing the productivity and efficiency of their industries. An undesirable-output-oriented data envelopment analysis (DEA) model with slacks-based measure (SBM) was used to evaluate the changes in the environmental efficiency of the transportation sector in 30 Chinese provinces (municipalities and autonomous ...