Definition
Minimum speed is the speed below which it is forbidden to drive without a justified cause (slow vehicle by design, obstacle, weather, etc.). On motorways and dual carriageways, the default minimum is half the posted maximum, unless a sign indicates otherwise.
Key facts
- Motorway and dual carriageway: default minimum 60 km/h (half of 120).
- Vertical sign R-411 can set a different minimum.
- Driving abnormally slow without cause is a serious offence.
- Bicycles and special vehicles may go slower if their design speed requires it.
Practice real questions on this topic
Free DGT 2026 test with official questions and explanations. No signup.
More glossary terms
- Reflector (catadioptric)— Passive reflective device that bounces incoming light back t…
- Conventional road— Interurban road that is not a motorway, dual carriageway or …
- Anti-lock braking system (ABS)— Electronic device that prevents the wheels from locking up d…
- Reversible lane— Lane whose direction of travel can change according to time …
- Safe following distance— Gap a driver must keep from the vehicle in front to stop wit…
- Blood alcohol limit— Concentration of alcohol in blood or exhaled air, expressed …
- Blind spot— Area around a vehicle that the driver cannot see using the m…
- Adaptive lights— Headlight system that adapts beam shape or intensity to road…