Warnings about roadworks must be put up at 10 metres away in a 60 kph zone.

If the free width is less than 3 metres (2.6 metres on small roads with not much traffic), the road must be closed.

Warnings about roadworks must be put up at 50 metres away in a 60 kph zone.

There should be no traffic regulation as long as the free width is between 3 and 4.5 metres (between 2.6 and 3.5 metres on small roads with not much traffic).

Pavements should only be closed when the free width is less than 0.5 metres.

Cycle paths should only be closed when the free width is less than 1 metre.

The delimitation line used when the carriageway is narrowed due to roadworks must be placed far enough away from the roadworks to allow motorists who first see the line when they pass it to still brake before reaching the work site.

The braking distance for a car travelling at 110 kph is 55 metres.

The braking distance for a car travelling at 60 kph is 75 metres.

The braking distance for a car travelling at 40 kph is 40 metres.