Hello,
Please note the long-distance 'trunk' network, at least for CA & NV, has been mostly settled for a couple years now - see documentation here:
https://wiki.openstreetmap.org/wiki/Nevada/highway_classification
https://wiki.openstreetmap.org/wiki/California/2022_Highway_Classification_Guidelines

Major road classification changes in particular have been a source of "spirited"
disagreement in the past, so getting some community buy-in, especially for 'trunk' roads, is greatly recommended. The OSM community forum (https://community.openstreetmap.org) as well as the US Slack channel area both active. I will be reverting this classification upgrade, as well as 395 north of Alturas, pending discussion with the community.