In-use measurements of #NOx and #particulates trends for #heavy-duty vehicles in California
A team at the University of Denver has measured the emissions from two in-use California heavy-duty truck fleets—at the Port of Los Angeles and the Cottonwood weigh station in Northern California—using the On-Road Heavy-Duty Measurement System in 2013, 2015 and 2017. A report on their findings is published in the ACS journal Environmental Science & Technology . Credit: ACS, Haugen and Bishop (2018) The California Air Resources Board issued the California Diesel Risk Reduction Plan in 2000 with the goal of reducing diesel PM emissions 85% statewide by 2020. Numerous rules and regulations have encouraged the retirement of older trucks and accelerated the penetration of lower-emitting newer or retrofitted vehicles. The San Pedro Bay Ports Clean Air Action Plan required all vehicles operating within the Ports of Los Angeles and Long Beach to have model year 2007 and newer engi...