Automobile law in Japan has improved air quality

air
Credit: CC0 Public Domain

A law passed in Japan in 1992 aimed to improve urban air quality by banning vehicles that violated certain emission standards from being registered in designated areas. A new study published in Contemporary Economic Policy provides evidence that the intervention reduced emissions, contributing to air quality improvements in metropolitan regions.

The law has been controversial because of its expense to owners of non-compliant vehicles and because of its unclear benefit. The study suggests that the law led to a 3% to 6% reduction in the monthly average ambient concentration of nitrogen dioxide over more than two decades, yielding benefits equal to about US $104 million as a result of reduced mortality from .

"Japan's automobile law seems to work well, but to formally evaluate the validity of the law, full cost-benefit analyses would need to be undertaken," said corresponding author Shuhei Nishitatano, Ph.D., of Kwansei Gakuin University.


Explore further

Barcelona bans older, most polluting cars

More information: Shuhei Nishitateno et al, HAVE VEHICLE REGISTRATION RESTRICTIONS IMPROVED URBAN AIR QUALITY IN JAPAN?, Contemporary Economic Policy (2020). DOI: 10.1111/coep.12457
Provided by Wiley
Citation: Automobile law in Japan has improved air quality (2020, January 8) retrieved 24 September 2021 from https://phys.org/news/2020-01-automobile-law-japan-air-quality.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
6 shares

Feedback to editors