M32 motorway as part of a park and ride facility which would reduce congestion in Bristol. Though the M32 has a small traffic flow, it is one of the most congested motorways in the region as it connects a number of key areas. As well as providing one of the few high-quality routes into the centre of Bristol, it is the only significant link from the M4 to the A4174 Bristol Ring Road. Parts of the M32 are reaching the end of their intended lifespan, leading to reduced speed limits and occasional closures for remedial work. Local residents have criticised the M32,
M4 (Istanbul Metro) weekends and during off-peak hours. M4 (Istanbul Metro) The M4, officially referred to as the M4 Kadıköy–Tavşantepe metro line (), is a , 19-station rapid transit line of the Istanbul Metro. Running between Kadıköy and Tavsantepe, it is currently the only rapid transit line operating on the Asian side of Istanbul. The M4 mostly runs under State road D100, parallel to the Istanbul-Ankara railway and is entirely underground. The M4 opened on 17 August 2012 with a large ceremony in Kadıköy, in which Prime Minister Recep Tayyip Erdoğan personally took part in. On 29 October 2013, with the opening of