This Order authorises the temporary restriction of traffic on the eastbound and westbound carriageways of the M4 Motorway over the Prince of Wales Bridge starting on 1st December 2018 to enable works to take place. Article 3 imposes a 50 miles per hour speed limit and restricts vehicles over 2.5 metres in width to the left hand lane. Article 4 authorises overnight closures between 8:00pm and 6:00am.
Link: The M4 Motorway (Prince of Wales Bridge) (Temporary Restriction and Prohibition of Traffic) Order 2018
Source: Legislation .gov.uk