Smart Motorway gantry sign
A gantry structure spanning the motorway with electronic signals, blue signs showing the left lane exiting and three others continuing ahead, and the following text.
Exit destinations: M25 ; (M11, M40); Stansted [Airport symbol]; Dartford; Heathrow [Airport symbol].
Forward destinations: London, Watford M1.
Junction number: 6A.
Change Route: M25 Stansted & Heathrow
We have finally reached the M25, where a huge slice of the M1's traffic will leave. One lane really isn't enough to cater for everyone who wants to turn off here, and there is routinely a queue on the left next to three lightly used lanes for the M1.