There are two types of speed limits in Oregon, statutory speed limits and designated speed limits.
A
statutory speed limit is specifically described in state law. Examples include:
- 15 mph - Alleys.
- 20 mph - Business districts and school zones.
- 25 mph - Residential districts.
- 65 mph - Most interstate highway sections.
Some statutory speed limits, like business and residential districts must meet specific criteria to be considered as such. Learn more about statutory speed limits in Oregon Revised Statutes 811.111 and ORS811.105.
Speed limits that differ from the statutory speed limit of a roadway are known as
designated speed limits. These are established through an engineering investigation, based on national standards. Oregon Administrative Rules (734-020-0015 and 734-020-014) regulate speed limit setting on public-paved non-low volume roads.
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