DTT Rules of the Road

Question 1

What is the default speed limit on a national primary road (N road) outside a built-up area in Ireland?

Accepted Answer

100 km/h

Answer

The default speed limit on national primary roads (N roads) outside built-up areas in Ireland is 100 km/h, unless a lower limit is posted.

Question 2

What is the default speed limit on a regional or local road outside a built-up area?

Accepted Answer

80 km/h

Answer

Regional and local roads outside built-up areas have a default speed limit of 80 km/h. These are narrower roads with less consistent surfaces.

Question 3

What is the default speed limit on a motorway in Ireland?

Accepted Answer

120 km/h

Answer

The default speed limit on Irish motorways is 120 km/h for cars. This is the maximum allowed unless a lower limit is displayed on gantry signs or roadside signs.

Question 4

What is the default speed limit in a built-up area (town or city) in Ireland?

Accepted Answer

50 km/h

Answer

The default speed limit in built-up areas (towns, villages, cities) in Ireland is 50 km/h. This applies automatically unless a different limit is posted.

Question 5

When must you use dipped headlights during the day in Ireland?

Accepted Answer

In poor visibility such as fog, heavy rain, or tunnels

Answer

Dipped headlights must be used whenever visibility is seriously reduced — this includes fog, heavy rain, snow, and tunnels, regardless of the time of day.

Irish DTT Practice Test

Irish DTT Practice Test

DTT Rules of the Road