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: The NORTH; Hatfield; A1(M).
Right turn destinations: London (N & C); Brent Cross; A1 [Hollow triangle diversion symbol] [Solid circle diversion symbol].
Change Route: A1(M) Hatfield or A1 London
There's an enormous roundabout here, covered in traffic lights and usually host to queueing traffic. It has six arms in total - one at the top left towards South Mimms village and the services, and another at top right for Barnet.