The Tokyo Metropolitan Government said Friday it will allow gas stations in the metropolis to sell diesel fuel with a lower sulfur density, which would make it easier for car owners to install equipment that would reduce particulate emissions.

It will be the first time such fuel is sold at regular gas stations in Japan, metropolitan officials said. The announcement came ahead of Tokyo’s new regulations on diesel cars planned to take effect next year. Diesel-powered cars emit larger amounts of particulates than other autos.

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