Oregon Revised Statute - ORS 164.245 Criminal Trespass in the Second Degree
1. A person commits the crime of criminal trespass in the second degree if the person enters or remains unlawfully in a motor vehicle or in or upon premises.
2. Criminal trespass in the second degree is a Class C misdemeanor.
ORS 164.245 Definitions, as used in ORS 164.245
(A) Enter or remain unlawfully means:
1. To enter or remain in or upon premises when the premises, at the time of such entry or remaining, are not open to the public and when the entrant is not otherwise licensed or privileged to do so;
2. To fail to leave premises that are open to the public after being lawfully directed to do so by the person in charge;
3. To enter premises that are open to the public after being lawfully directed not to enter the premises; or
4. To enter or remain in a motor vehicle when the entrance is not authorized to do so.
(B) Premises include any building and any real property, whether privately or public owned.