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Johnson Matthey Technology Review—October 2017
The October issue of Johnson Matthey Technology Review includes a number of topics related to emissions from transport.



California adopts ZEV mandates for state heavy-duty vehicle fleets
California Governor Brown signed Assembly Bill (AB) 739, which requires at least 15% of heavy-duty vehicles newly purchased by state agencies to be zero-emission vehicles beginning in 2025.



Andreas Mayer: Open letter on NO2 health effects—with responses
Andreas Mayer delivers a strong critique of a recent journal paper on the health effects of excessive NOx emissions from diesel cars.



Volvo introduces LNG powered Euro VI trucks
Volvo Trucks is introducing Euro VI-compliant heavy-duty trucks running on liquefied natural gas or biogas.



Updated: Combustion Systems
Updated Technology Guide paper on Combustion Systems covers new Sandia research on stepped-lip combustion bowls, more information on the Volvo WAVE piston, and other updates.



Bus manufacturers commit to bring ‘soot-free’ buses to 20 megacities
Four of the world’s largest bus and engine manufacturers—BYD, Cummins, Scania and Volvo Buses—have committed to ensure ‘soot-free’ urban bus engine technology is available for purchase in 20 megacities beginning in 2018.



Updated paper: Dimethyl Ether
Updated Technology Guide paper on Dimethyl Ether.