Introduction This paper presents an analytical model to contrast the carbon emissions from a number of goods delivery methods. This includes individuals travelling to the store by car, and delivery trucks delivering to homes. While the impact of growing home delivery services has been studied with combinatorial approaches, those approaches do not allow for systematic conclusions regarding when ...

Vehicle emissions are a major source of urban air pollution. In recent decade, the Chinese government has introduced a range of policies to reduce vehicle emissions. In order to understand the chemical characteristics of PM2.5 from on-road vehicle emissions in the Pearl River Delta (PRD) region and to evaluate the effectiveness of control policies on vehicle emissions, the emission factors of P...

Road traffic contributes a major share of emissions and energy consumption. A shift to other transportation modes is often seen as an approach to combat the emissions. A shift is not always possible in some regions where other transportation modes are not sufficiently developed due to low population density or other reasons. This paper discusses possibility of combating emissions and energy con...

Plug-in hybrid electric vehicles (PHEVs) have potential to reduce greenhouse gas (GHG) emissions in the U.S. light-duty vehicle fleet. GHG emissions from PHEVs and other vehicles depend on both vehicle design and driver behavior. We pose a twice-differentiable, factorable mixed-integer nonlinear programming model utilizing vehicle physics simulation, battery degradation data, and U.S. driving d...

In this study we present onroad fossil fuel CO2 emissions estimated by the Vulcan Project, an effort quantifying fossil fuel CO2 emissions for the U.S. in high spatial and temporal resolution. This high-resolution data, aggregated at the state-level and classified in broad road and vehicle type categories, is compared to a commonly used national-average approach. We find that the use of nationa...

Vehicular emissions have increased considerably over the years with the increase in traffic. Modern roundabouts can improve traffic flow as well as cut down vehicular emissions and fuel consumption by reducing the vehicle idle time at intersections and thereby creating a positive impact on the environment. The primary focus of this research is to study the impact of modern roundabouts in cuttin...

France, Germany, and Sweden have recently linked vehicle taxes to the carbon dioxide (CO2) emissions rates of passenger vehicles. France has introduced a system of CO2-based purchase taxes and subsidies, whereas Germany and Sweden impose annual circulation (i.e., registration) taxes that are linear functions of CO2 emissions rates. This paper (a) compares the effects of vehicle taxes on registr...

With the increasing growth of vehicle numbers in the world, Global warming is becoming a serious issue. Vehicle CO2 emissions are considered to be one of the main sources of global warming. In order to reduce vehicles CO2 emissions, a dynamic traffic light control scheme is proposed. In the proposed scheme, we are the first to use Electronic Toll Collection (ETC) devices to obtain real time tra...

To improve the drivability and reduce fuel consumption and emissions of an existing sport utility vehicle (SUV), simulation-based vehicle refinement was conducted in this study. A simulation model of the SUV was first established and validated. Both simulation and test results confirm that due to low reserve power both at low and high speed bands, the drivability, fuel economy and emissions of ...

This paper is the second of a two part study which quantifies the economic and greenhouse performance of conventional, hybrid and fully electric passenger vehicles operating in Australian driving conditions. This second study focuses on the life cycle greenhouse gas emissions. Two vehicle sizes are considered, Class-B and Class-E, which bracket the large majority of passenger vehicles on Austra...