M32 motorway along the viaduct, while surveying work was carried out in 2016 during the Metrobus junction refurbishments. The M32 has been criticised for severing longstanding links in Bristol. Older residents have claimed that formerly close-knit communities such as Easton have been shut off by the imposing concrete barriers next to the motorway. It has been criticised for running alongside the grounds of Stoke Park, spoiling the local atmosphere and requiring part of the estate including the Duchess Pond to be demolished. In 2008, Jeremy Isaacs claimed the motorway was a reason that Bristol did not win the European Capital of Culture
M4 Western Motorway get to Parramatta without passing through traffic lights. A subsequent plan outlined a $7 billion plan to link the M4, Victoria Road, City West Link and Sydney Airport using a network of underground tunnels.. Both plans were subsequently shelved, with the NSW state government citing the need for an integrated plan for transport. In the month prior to the 2011 state election, the NRMA released a report in which it recommended building a tunnel to connect the end of the M4 at Concord and the start of the City West Link, relieving Parramatta Road of enough traffic to convert it