Junction 10 is the busiest section of the M25, with over 270,000 vehicles travelling through it every day. Due to the volume of traffic and the resulting queues, this area of their network has a very poor safety record and holds one of the highest collision rates across the National Highways network.
Answer. Answer: A motorway just relates to the A road that it's relieving pressure from. The reason there is no M7 is that the A7, which runs from Carlisle to Edinburgh has no need for a motorway to relieve it.
Junctions and servicesThe M25 has been criticised for having too many junctions; 14 of them serve only local roads. In 2016, Edmund King, president of the Automobile Association, attributed congestion on the M25 to excessive junctions.
The M25 or London Orbital Motorway is a major road encircling most of Greater London. The 117-mile motorway is one of the most important roads in the UK and one of the busiest. Margaret Thatcher opened the final section in 1986, making the M25 the longest ring road in Europe upon opening.