A gantry spanning the motorway with blue overhead signs showing the following text.
Forward destinations: London (N & E) (M1); Coventry (N & E) M6 .
Exit destinations: A446; [Hollow square diversion symbol] [Solid triangle diversion symbol] Coventry (S & W); Birmingham (E); N.E.C. [Railway station symbol] [Airport symbol] .
Junction number: 4.
We keep passing through junctions where only two lanes continue on the M6, but the motorway widens out to three lanes immediately afterwards. It's just happened again, but we're not even nearly done messing about with how many lanes are on the road yet.