Traffic movements affected by an obstruction

Where you'll see it

On any road

What it means

To guide you by means of a diagram which indicates that one of the lanes of a carriageway comes to an end

What you must do

Whenever a lane ends, converges, merges or is added, make sure in time that there is a big enough gap in the traffic to merge with the traffic. Also yield to other traffic, which might merge.

Source: Signs manual GS103, GS104, GS105