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Analyzes results of emissions tests on 32 Euro 6 diesel passenger cars from 10 different manufacturers. Results show some automakers meeting diesel NOx emissions standards under more realistic driving conditions, while others lag badly.
Analyzes the fuel efficiency / carbon intensity of new commercial aircraft, and indicates the substantial gap existing between what is technological feasible and new aircraft currently on the market.
Inspection and maintenance (I/M) programs are key to identifying high-emitting vehicles and mitigating their impact on air quality and climate. This paper assesses best practices for I/M programs targeting heavy-duty vehicles and makes recommendations on how to improve HDV I/M programs in the future.
Analyzes the implications of a growing natural gas vehicle fleet on the emission benefits of the U.S. HDV “Phase 2” greenhouse gas rulemaking, synthesizing data on upstream emissions, vehicle emissions, and efficiency technology.
Surveys actions being taken by state and local governments and public utilities to facilitate electric vehicle deployment in the 25 largest U.S. metro areas. Presents city-specific analysis of consumer benefits and links between policies aimed at promoting EVs and market uptake.
Reviews China’s efforts to rein in air pollution from vehicles and presents a cost-benefit analysis of the introduction of stringent new vehicle emissions and fuel quality standards.
A survey of local- and provincial-level policies intended to control emissions from high emitters and older vehicles, and comparison with best practices.
Discusses the use of computer simulation to certify whole-vehicle efficiency of HDVs, and compares tools used to quantify HDV CO2 emissions in the US (GEM v2.0) and EU (VECTO v2.0.3 beta; not yet used in a regulatory context).
Evaluation, based on leading technology effectiveness, technology cost, and fuel price data, of payback periods for the efficiency technologies analyzed in a companion paper on tractor-trailer technology potential.