Speed limit questions are among the most straightforward on the theory test, but they still catch people out. Whether you’re driving through Mayo’s built-up areas at 50 km/h or on national roads at 100 km/h, knowing the limits is non-negotiable.
Mayo combines wild Atlantic coastline with inland bog and mountain roads. Castlebar and Ballina are manageable towns, but the roads to Achill Island, Belmullet, and northwest Mayo are some of Ireland’s most remote and challenging. Single-track roads, unprotected cliff edges, and winter storms are real considerations. The N5 to Dublin and N17 to Galway provide dual carriageway experience. Mayo’s high pass rate may reflect the extensive rural driving practice locals get.
Speed limit questions are pure memorisation — there’s no logic to derive, you either know the number or you don’t. The good news is there are only a handful of speed limits to learn.
The key numbers: Built-up areas: 50 km/h. Regional roads: 80 km/h. National roads: 100 km/h. Motorways: 120 km/h. Special zones (schools, housing estates) may have 30 km/h limits. Learner drivers have no separate speed limits but must display L plates.
Study approach: Create a simple table of all speed limits and review it daily. The questions will test you on specific scenarios (“what is the speed limit on a regional road?”) rather than asking you to recall the full table.
Common trap: The default speed limit when entering a built-up area is 50 km/h even without a sign — the built-up area boundary sign itself implies 50.
Q1.What is the speed limit on a motorway?
Q2.What is the default speed limit in built-up areas?
Q3.What is the speed limit on a national road?
These are just a sample. L-Plate has all 60 speed limits questions with AI-powered explanations.
Built-up: 50 km/h, National: 100 km/h, Motorway: 120 km/h
School zones: 30 km/h during school hours
Special speed limits are indicated by signs
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Built-up areas: 50 km/h, Regional roads: 80 km/h, National roads: 100 km/h, Motorways: 120 km/h.
30 km/h during school hours in school zones.
Mayo has two test centres: Ballina (5 weeks) and Castlebar (6 weeks). Both have among the shortest waits in Ireland.
Yes. Both Mayo centres have short waits and manageable test routes. Ballina at 5 weeks is one of the shortest waits nationally.
The RSA question bank contains 60 speed limits questions. On any given test, you’ll typically see 3–12 questions from this category depending on the random selection.
The national average pass rate for speed limits questions is 78%. Practising all 60 questions on L-Plate significantly improves your chances.