Motorway lane gain sign
A blue sign with a diagram showing three lanes on the motorway being joined by one lane from the left.
A fourth lane arrives from the M20, but the motorway is going to get much, much busier before we finally reach Dartford.
A blue sign with a diagram showing three lanes on the motorway being joined by one lane from the left.
A fourth lane arrives from the M20, but the motorway is going to get much, much busier before we finally reach Dartford.