Bringing any type of drug into or out of a country is illegal in most places, so don’t bring them with you when traveling (or at least make sure it’s legal first).
Driving under influence of drugs is also illegal in most places, and for good reason. Do not drive under influence to avoid any problems.
Many places do not allow the use of drugs in public, even when they are legalized for recreational use. Make sure it is legal before lighting a joint in a public place.
Oregon is a very friendly state in regards to cannabis users, with decriminalization voted in very early in 1973, it was also the first state to decriminalize marijuana. The legalization of medical marijuana products for qualified patients came in 1998 and was expanded to include recreational users a little more than a decade later, in 2014, with the implementation following the next year.
Currently there are many dispensaries around the state, where both medical and recreational users can legally purchase any of the marijuana products, so you will not have a problem finding your favorite strain. Another great plus is that in Oregon, it is possible for residents of other states to obtain a medical marijuana card.