Practice limits and how to adjust your speed, with questions based on the Oregon Driver Manual.
Yes, at all times
It applies until an End Work Zone Speed Limit sign or another speed sign.
Source: Oregon Driver Manual 2026-2027, Sharing the Road, Work Zones, p. 59 (PDF p. 67)
A traffic patrol member is helping children at a crosswalk
Children waiting at or walking in a crosswalk also count.
Source: Oregon Driver Manual 2026-2027, Sharing the Road, School Zones, p. 49 (PDF p. 57)
65 mph
Some interstate sections, such as part of I-84 in eastern Oregon, have higher limits set by law.
Source: Oregon Revised Statutes 811.111, ORS 811.111(1)(a), (2); Oregon Driver Manual 2026-2027, Speed Regulations, Interstate Speed Limits, p. 19 (PDF p. 27)
25 mph
The same 25 mph applies in parks and residential districts.
Source: Oregon Driver Manual 2026-2027, Speed Regulations, Speed Limits, p. 19 (PDF p. 27); Oregon Revised Statutes 811.111, ORS 811.111(1)(c), (1)(d)(C)-(D)
They are higher than elsewhere
The manual says traffic fines are doubled in all work zones, and Oregon law sets higher presumptive fines for violations noted in a highway work zone.
Source: Oregon Driver Manual 2026-2027, Sharing the Road, Work Zones, p. 59 (PDF p. 67); Oregon Revised Statutes 811.230, ORS 811.230(2)-(3); Oregon Revised Statutes 153.020, ORS 153.020(1)
15 mph
The same limit applies on narrow residential roads.
Source: Oregon Driver Manual 2026-2027, Speed Regulations, Speed Limits, p. 19 (PDF p. 27); Oregon Revised Statutes 811.111, ORS 811.111(1)(d)(A)
7 a.m. to 5 p.m. on school days
If you are unsure whether it is a school day, slow to 20 mph.
Source: Oregon Driver Manual 2026-2027, Sharing the Road, School Zones, p. 49 (PDF p. 57); Oregon Revised Statutes 811.111, ORS 811.111(1)(e)
Children are arriving or leaving, so drive 20 mph
A flashing light means the 20 mph school limit is in effect.
Source: Oregon Driver Manual 2026-2027, Sharing the Road, School Zones, p. 49 (PDF p. 57)
A $1,150 presumptive fine and a 30 to 90 day suspension
The court must also order the suspension.
55 mph
55 mph applies to roads that do not meet another definition.
Source: Oregon Driver Manual 2026-2027, Speed Regulations, Speed Limits, p. 19 (PDF p. 27); Oregon Revised Statutes 811.111, ORS 811.111(1)(d)(F)
We wrote these practice questions from the facts in the Oregon Driver Manual (2026-2027 edition, Form 735-37 (1-26), read 2026-11-09; the PDF linked from the DMV manuals page is byte-identical (SHA-256) to the copy read, and the online manual (oregon.gov/odot/dmv/pages/online_manual) has the same text. Pages are cited as printed with the PDF page (PDF page = printed page + 8); PDF pages 56 and 57 both carry the School Zones text (printed 48 and 49), and the Impaired Driving text is printed twice (pp. 82-83), so citations use p. 49 and pp. 82-83. The manual says it condenses and paraphrases selected language of the Oregon Revised Statutes and is not a source of law (p. iv), so rules of law were checked against the ORS 2025 edition on oregonlegislature.gov (chapters 153, 742, 806, 807, 809, 811, 813, 815; read 2026-11-09), and teen licensing restrictions against ORS 807.122 and DMV's teen pages. Conflicts and gaps: approaching a stopped vehicle (p. 57) says you must change lanes and 'may also' slow down; ORS 811.147 requires a lane change away from the vehicle or slowing to at least 5 mph under the limit on multilane roads, and slowing on two-lane roads, so questions follow the statute. The uncontrolled intersection rule (p. 42) is backed by ORS 811.275, which gives the driver on the right the right of way regardless of who arrives first. Not used: towing fines (p. 36, no statute found in this round), the disabled parking fine range $165-$1,000 (p. 70; ORS 811.615 sets Class C and Class A violations, no such range), the 50-foot loud sound rule (p. 80; ORS 815.232 limits it to vehicles inside an urban growth boundary) and the stopping-distance chart (image only). ORS 811.145 and 811.507 change on 2027-01-01 (Oregon Laws 2025, chapter 278) only by adding organ transport vehicles, which no question uses. edition) and from official sources on road signs. Every answer links to its source, so you can check it and read more.
DMV Decoded is an independent guide, not a government agency. This practice test is not connected to the Oregon Department of Transportation, Driver and Motor Vehicle Services (DMV), and your actual test will have different questions. Study the handbook, and check the agency's website for current rules.