Publications

Consumer Preferences for Ride-Hailing: The Barriers to an Autonomous, Shared, and Electric Future

Rubal Dua, Tamara Sheldon

Research has shown that when combined in a mobility-on-demand (MOD) framework, automation, carpooling, and electrification have the potential for theoretically large emission reductions. However, there is insufficient research regarding the consumer preferences for and behavioral responses to this vision of…

Dua, Rubal

Sheldon, Tamara

The Dynamic Role of Subsidies in Promoting Global Electric Vehicle Sales

Tamara Sheldon, Rubal Dua

We offer the most comprehensive analysis to date of global plug-in electric vehicle (PEV) subsidies. We accomplish this by estimating vehicle choice models for 23 countries using 2010–2019 sales data and using counterfactual simulations to assess the cost-effectiveness of PEV…

Sheldon, Tamara

Dua, Rubal

Electric Vehicle Subsidies: Time to Accelerate or Pump the Brakes?

Science Direct

Rubal Dua, Tamara Sheldon, Omar Al Harbi

How Cost-effective are Electric Vehicle Subsidies in Reducing Tailpipe-CO2 Emissions? An Analysis of Major Electric Vehicle Markets

International Association of Energy Economics

Tamara Sheldon, Rubal Dua, Omar Al Harbi

How Cost-Effective Are Electric Vehicle Subsidies in Reducing Tailpipe-CO2 Emissions?

Tamara Sheldon, Rubal Dua, Omar Al Harbi

The transportation sector accounts for 24% of global greenhouse gas (GHG) emissions (IEA 2020). Road transport is the most utilized mode because of its convenience (Van Essen 2008). However, it is also the most emissions intensive mode, accounting for 75%…

Sheldon, Tamara

Dua, Rubal

Omar Al Harbi

Responsiveness of Saudi New Vehicle Fleet Fuel Economy to Fuel and Vehicle Price Policy Levers

Tamara Sheldon, Rubal Dua

The Saudi government has implemented several policies to slow the growth of, or even reduce, its on-road motor gasoline consumption. These include demand-side policies such as raising fuel prices and supply-side policies such as the fuel economy standards (SASO and…

Sheldon, Tamara

Dua, Rubal

Are Electric Vehicle Subsidies Becoming More Impactful Over Time?

Tamara Sheldon, Rubal Dua, Omar Al Harbi

Various subsidies for plug-in electric vehicles (PEVs) have been implemented worldwide at the federal, state and regional levels. These subsidies aim to promote PEV adoption to help reduce both local air pollution and greenhouse gas emissions (Hardman 2019). In the…

Sheldon, Tamara

Dua, Rubal

Omar Al Harbi

How Responsive is Saudi New Vehicle Fleet Fuel Economy to Fuel-and Vehicle-price Policy Levers?

Science Direct

This paper investigates the drivers of recent improvements in Saudi Arabia’s fleet fuel economy for new vehicles including passenger cars and light-duty trucks. Vehicle choice models are estimated using both aggregate new vehicle sales data and disaggregate new vehicle buyer…

Rubal Dua, Tamara Sheldon

A Cost-Effective Pathway to a Low-Emissions Transportation Future

T20

This policy brief seeks to lay out a cost-effective transition pathway to a low-emissions transportation future. It highlights the effectiveness of technology-neutral frameworks that are focused on fuel economy improvements in the light- and heavy-duty vehicle sectors. It also provides…

Rubal Dua, Omar Al Harbi, Yagyavalk Bhatt, Tamara Sheldon, Puneet Kamboj, Geetika Dang, Anushree Majumdar, Gabriel Collins

Understanding the Evolution of the Impact and Cost-Effectiveness of Electric Vehicle Subsidies

Tamara Sheldon, Omar Al Harbi, Rubal Dua

Our previous research found that promoting plug-in electric vehicle (PEV) adoption through financial subsidies is expensive. In this commentary, we explore how the cost-effectiveness of the PEV subsidy program has evolved over time. To understand this evolution, we developed vehicle…

Sheldon, Tamara

Omar Al Harbi

Dua, Rubal

The Impact of Recent Changes to China’s Plug-In Electric Vehicle Subsidy Design

Tamara Sheldon, Rubal Dua

Subsidies that promote plug-in electric vehicle (PEV) adoption have been a key component of China’s overall plan for reducing local air pollution and the greenhouse gas emissions from its light-duty vehicle sector. Since 2009, PEVs qualify for substantial rebates (up…

Sheldon, Tamara

Dua, Rubal

Effectiveness of China’s Plug-in Electric Vehicle Subsidy

Science Direct

Subsidies for promoting plug-in electric vehicle (PEV) adoption are a key component of China’s overall plan for reducing local air pollution and greenhouse gas emissions from the light-duty vehicle sector. In this paper, we explore the impact and cost-effectiveness of…

Rubal Dua, Tamara Sheldon

The Effectiveness of China’s Plug-In Electric Vehicle Subsidy

Tamara Sheldon, Rubal Dua

Subsidies for promoting plug-in electric vehicle (PEV) adoption are a key component of China’s overall plan for reducing local air pollution and greenhouse gas (GHG) emissions from its light-duty vehicle sector. This paper explores the impact and cost-effectiveness of the…

Sheldon, Tamara

Dua, Rubal

Impact of India’s Recent Electric Vehicle Subsidy Announcement

Tamara Sheldon, Dimpy Suneja, Rubal Dua

The Indian government is urgently promoting electric vehicles (EVs) to help curb the country’s urban air pollution — the world’s worst, according to the World Health Organization. The steep increase in vehicle sales in recent years has brought deteriorating air…

Sheldon, Tamara

Suneja, Dimpy

Dua, Rubal

Impact of China’s Plug-In Electric Vehicle Subsidy Reduction

Tamara Sheldon, Rubal Dua

China, the world’s largest emitter of carbon dioxide, has set ambitious climate goals. These include reducing the carbon intensity of its 2005 gross domestic product (GDP) by 40-45% by 2020 and by 60-65% by 2030 (Xu, Chen, and Chen 2017). A key…

Sheldon, Tamara

Dua, Rubal

Drivers of New Light-Duty Vehicle Fleet Fuel Economy in Saudi Arabia

Rubal Dua, Tamara Sheldon

This paper investigates the drivers of recent improvements in Saudi Arabia’s new light-duty vehicle fleet fuel economy. A vehicle choice model is estimated using aggregate and disaggregate new vehicle purchase data. The estimates are used to simulate counterfactual policy scenarios.…

Dua, Rubal

Sheldon, Tamara

Assessing the Effectiveness of California’s “Replace your Ride.”

IDEAS

We analyze the effectiveness of California’s “Replace Your Ride” policy, a pilot program that gives subsidies to lower income households in the greater Los Angeles area to retire older vehicles and replace them with newer, cleaner vehicles.

Tamara Sheldon, Rubal Dua

Measuring the Cost-effectiveness of Electric Vehicles Subsidies

IDEAS

Despite the prevalence of plug-in electric vehicle (PEV) subsidies, research on improving their cost-effectiveness and impact remains limited. To assess the scope for improving their cost-effectiveness, we develop a vehicle choice model-based counterfactual simulation using a large-scale nationally representative sample…

Rubal Dua, Tamara Sheldon

Gasoline savings from clean vehicle adoption

Energy Policy

Conventional counterfactuals used in literature may underestimate fuel savings from clean vehicle adoption, thus overestimating the costs of securing associated environmental benefits. Using a large-scale nationally representative sample of U.S. new car buyers, we propose a choice model-based counterfactual approach…

Tamara Sheldon, Rubal Dua