Motorway lane gain sign
A blue sign with a diagram showing three lanes on the motorway being joined by one lane from the left.
Traffic from the M4 merges back in to a four-lane motorway. Trust me, there will be a queue here.
A blue sign with a diagram showing three lanes on the motorway being joined by one lane from the left.
Traffic from the M4 merges back in to a four-lane motorway. Trust me, there will be a queue here.