A6144(M) motorway ceased being a special road on 25 May 2006 losing its motorway status. It is now subject to a 50 mph (80 km/h) speed limit and is classified as the A6144. The road through Sale retained the A6144 number, meaning that there are two branches (and two junctions with the M60 motorway) with the same road number. Despite losing motorway status, the road still prohibits pedestrians, cyclists, and horse riders. Following the change of signage on 25 May 2006, two marker posts, the A6144(M) confirmation sign and a lay-by warning sign are privately preserved. A6144(M) motorway The A6144(M) was a
Dartford Crossing a reduced speed limit of when crosswind is faster than or headwind faster than , and is closed entirely if Britain's national weather service, the Met Office, predicts crosswind above or headwind above . The crossing is the busiest in the United Kingdom. Because the design capacity has been exceeded, the crossing is subject to major traffic congestion and disruption, particularly when parts are closed because of accidents or bad weather. Though the Government was adamant that the Queen Elizabeth II Bridge should be designed to avoid closure due to high winds, the bridge has nevertheless had to close on