The estimated travel time between the Second Severn Bridge and Cardiff is doubled.
Eight passengers and two officers were injured in the crash as police answered an emergency call.
The move by Cardiff council is aimed at improving standards of performers and follows complaints.
New Cardiff Blues coach John Mulvihill says he aims to make Wales and Lions flanker Sam Warburton an even better player when he returns to rugby.
Gareth Bale's agent wants Real Madrid assurances over game time, Liverpool keen on Jack Grealish, Manchester United can sign Jerome Boateng for £50m, plus more.
South Wales Argus
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