I'd read what is proposed before you say that, Rabbs. All they have announced is some "enhancements" to the A48 from Culverhouse to Bonvilston (my guess is changing the 30 limit through St Nicholas to a 40 limit), and an "improvement" to the junction with Five Mile Lane and "strategic widening" of the lane itself.
The road to the airport - ie, a proper highway to the M4 - is still a distant dream....
Pay attention, Rabbs!
Found the quote now:
"A stretch of the A48 and A4226, known as Five Mile Lane, which runs between Culverhouse Cross and the airport, will be improved to take traffic away from the the A4321 through the village of Wenvoe.
A new link from the M4 will also be investigated with a view to diverting traffic away from the busy Culverhouse Cross interchange. "
TA