Oregon:ORS 811.420(1)
- 811.420 Passing in no passing zone; exceptions; penalty.
- (1) A person commits the offense of passing in a no passing zone if the person drives a vehicle on the left side of a roadway in a no passing zone that has been established and designated to prohibit such movements by appropriate signs or markings posted on the roadway.
(Source: http://www.leg.state.or.us/ors/811.html)