Motorway gantry sign
A gantry spanning the motorway with blue overhead signs indicating one lane exiting and three continuing ahead, and the following text.
Left lane destinations: M49 (M4 West); SOUTH WALES; Cardiff, Newport.
Right-hand three lanes destinations: The MIDLANDS; London (M4 East); Chepstow (M48) M5 [Hollow triangle diversion symbol] .
Junction number: 18A.
Change Route: M49 SOUTH WALES
Look, I don’t want to be a pedant, but surely junction 18A should be between 18 and 19, not between 17 and 18. This should surely be junction 17A.
Yes, OK. Sorry. I’m done now. We’ll talk about something else.