Motorway roundabout sign
A blue sign with a diagram showing a roundabout at a three-level stacked roundabout interchange and the following text.
Left turn destinations: London (N & C); Brent Cross; A1.
Right turn destinations: The NORTH; Hatfield; A1(M) [Hollow square diversion symbol].
Change Route: A1 London or A1(M) Hatfield
The sliproad lands us at this huge signalised gyratory, where you're guaranteed to get held up in traffic if you arrive at the wrong time of day. It has two more exits than this - the A1081 to Barnet at the bottom left, and South Mimms services and village at the bottom right.