Why is Oregon phasing out older diesel engines?
Even though diesel emission-reducing technology has improved in the last few decades, the state of Oregon is still seeing significant pollution from older on-road diesel engines. One method to reduce these harmful emissions includes the installation of appropriate retrofit technology. Retrofits are aftermarket systems that are installed on a vehicle to reduce pollution from diesel engines.
In 2019, the Oregon Legislature responded to these concerns and passed HB 2007 (2019) to reduce diesel emissions in Oregon. The bill requires DEQ to approve retrofit systems for use in medium- and heavy-duty diesel engines, including box trucks and tractor trailers, and to create a method for issuing certifications of compliance.
It also establishes deadlines for older diesel engines after which they cannot be titled or registered in Clackamas, Multnomah, and Washington counties.
Lastly, the bill establishes renewal, registration, and titling phase-out dates, as well as exemptions on certain vehicles.