The M32 is a relatively lightly trafficked route compared to neighbouring motorways such as the M4 and M5, yet has still been described in the West of England Combined Authority's Joint Transport Plan as "by far, the busiest road corridor into Bristol." In 2001, the average daily traffic flow was 40,400 vehicles northbound and 39,900 southbound, while in 2014, the combined flow for both directions averaged 75,000 vehicles. Despite this, the M32 is frequently congested as it is a popular route into the centre of Bristol. During the morning rush hour, queues can tail back onto the motorway from the city centre. In 2014, the Highways Agency reported that the M32 between junctions 1 and 2 was the most unreliable motorway journey along the entire M4 corridor between London and South Wales, with over 56 per cent of journeys taking longer than predicted. The problem is exacerbated whenever there is an incident on the M4 around Bristol, as drivers attempt to use the M32 as a diversion route, creating further traffic and congestion.