Oregon "CARRY CHAINS" requirement ?

In Colorado big trucks have to carry chains through the end of May. It does not pertain to private vehicles or RVs. However there are private vehicle (to include RV's) rules. Code 15 and 16 traction laws when in effect do pertain to private vehicles and code 16 does require chains on all vehicles on the roadway. I lived here for 25 years and while this rule 16 has only been in effect a few years I have never seen it implemented they close the road first as usually by that time there have been enough accidents that you cant get through anyway and they close it to clear the accidents which also allows the plows to get some what caught up. Sometimes it is too much even for them and they close the road until it stops snowing then the plows get out and clear then they reopen. I-70 usually closes only for accident clearing or avalanche control for the other lesser known roads wolf creek pass on 160 for example while they do a great job keeping it open I have seen it closed for days at a time.
colorado stuff https://www.codot.gov/travel/winter-driving/TractionLaw

More specific to Oregon
https://www.tripcheck.com/Pages/chain-laws.asp