In Oregon the highest posted speed limit is 70 mph (113 km/h) and 65 mph (105 km/h) for trucks on I-84 east of The Dalles, I-82 and US 95. Oregon state statutes allow for a maximum speed limit of 70 mph (113 km/h) on rural interstate highways, and the law gives the Oregon Department of Transportation (ODOT) discretion to define which freeway segments to post the 70 mph (113 km/h) speed limit. ODOT did not raise speed limits beyond 65 mph (105 km/h) on other freeways, and strongly opposed legislative efforts to raise the maximum allowable speed limit. In all rural areas in Oregon, the speed limit is 55 mph (89 km/h) unless otherwise posted.
The speed limit posted in a school zone is 20 mph (32 km/h), usually during school days, 7 am to 5 pm. School crossings with flashing yellow lights can be found in school zones. In many communities, school zones are strictly enforced and speed traps in these areas are commonly employed.
Any rural two-lane road in the state has a default speed limit of 55 mph (89 km/h). Town speed limits are 15 mph (24 km/h) in an alley, 35 mph (56 km/h) on boulevards, and 45 mph (72 km/h) on roads with traffic lights.