High-occupancy vehicle (HOV) lanes have been promoted to encourage carpools, reduce traffic congestion, and improve air quality. At the partial equilibrium level, commuting with three workers per automobile clearly reduces highway congestion, lowers carbon emissions, and saves energy compared to...

One of the goals of the U.S. ethanol mandate is to reduce fossil fuel use in the transportation sector. But some critics of the mandate argue that a more efficient way of reducing fuel consumption would be to focus on improvements in fuel efficiency of motor vehicles. We consider the time span...

In many developing and emerging economies, rapid income growth and changing demographics is leading to heightened demand for energy-intensive urban transportation. This study provides a comprehensive empirical framework for analyzing how income, age, and education influence individual energy use...

Previous literature has suggested that the urban form (i.e., city size, density, and center distribution pattern) influences urban energy consumption. It has been argued that more dense development is likely to result in more energy-efficient and sustainable cities. However, very little is known...

The long-term trend toward more work from home due to digitization has found a strong new driver, the Covid-19 pandemic. The profound change in urban mobility patterns supports the often-held view that reducing the number of commuting trips can lower carbon emissions to a certain degree. We...

In recent years, extreme weather around the world due to climate change has occurred increasingly frequently, and countries globally have gradually realized the harm caused by global warming. All countries are also making efforts to promote less consumption of fossil fuel energy and the use...

As the backbone of environmentally sustainable transport, rail transport is one of the most preferred modes since it emits three times less CO2 and particulates per ton-mile than road transport. Besides these ecological benefits, rail transport is the most costeffective. The global energy crisis...