M32 motorway award that year, adding that the M32 had created a "concrete divide" between Eastville, St Paul's and Easton. Local residents have complained about the noise on the M32. A report by the Department for Environment, Food and Rural Affairs showed that traffic noise can be as loud as 75 decibels in neighbouring estates. In 2014, a petition was created to campaign Bristol City Council to install quieter road surfaces and noise barriers along the motorway. In 2011, a council gardening scheme created a horticultural landscape next to the southern end of the M32. The project included planting of red poppies,
M4 relief road and narrows to a restricted two-lane section through the Brynglas Tunnels, where heavy congestion occurs at peak hours. A variable speed limit is in place between junctions 24 and 28. M4 sliproads at Junction 25 (Caerleon Road) are diverted to reduce traffic through the tunnels. M4 Westbound traffic joining at Junction 25 is diverted via Junction 25A/A4042 (Heidenheim Drive)/A4051 (Malpas Road) to Junction 26. Similarly eastbound traffic wishing to exit at Junction 25 is diverted from Junction 26 via the A4051/A4042/Junction 25A. This adds to congestion on Malpas Road and other local roads near Newport city centre at peak times.