HC Deb 16 December 1983 vol 50 c605W
Dr. Marek

asked the Secretary of State for Transport what are the projected night-time traffic loads on the various sections of the M25 yet to be opened.

Mrs. Chalker

The estimated figures are as follows:

Section No. of vehicles between 10pm and 6 am
Swanley-Sevenoaks, Kent 3,000–4,000
Swanley Links, Kent
Leatherhead-Reigate, Surrey 2,500–3,500
Leatherhead Interchange, Surrey
Wisley-Leatherhead, Surrey
Airport Spur to M4, Surrey/Buckinghamshire 4,500.5,500
M4–M40, Buckinghamshire 4,000–5,000
M40 Interchange, Buckinghamshire
M40-Maple Cross, Buckinghamshire/Hertfordshire
Micklefield Green-South Mimms (A405–M1), Hertfordshire 3,000–4,000
Micklefield Green-South Mimms (M1–A1(M)), Hertfordshire 2,000–3,500
A19–M11, Hertfordshire/Essex 3,000–4,000

The above figures assume that all sections of M25 are in full use and represent average daily flows for a "neutral" month in 1987. Flows will be somewhat higher during the summer months and lower during winter; similarly vehicle usage tends to be greater at weekends than during the week —Monday to Friday.

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