Motorway gantry sign
A gantry spanning the motorway with blue overhead signs showing the following text.
Forward destinations: The NORTH, Stevenage A1(M).
Exit destinations: A1001 Hatfield, A414 St Albans.
Junction number: 3.
This junction comes hot on the heels of the last, and is the reason why junction 2 has no north-facing sliproads - if it did the junctions would be too close together. The A414 is the North Orbital Road, a forerunner to the M25.