Question to the Department for Transport:

To ask the Secretary of State for Transport, if he will estimate how many vehicles per day using all or part of the M25 between junctions 29 and 3 in a clockwise direction joined the M25 (a) before junction 30, (b) at junction 30, (c) at junction 31, (d) at junction 1a, (e) at junction 1b and (f) at junction 2; and in each such case how many of those vehicles left (i) at junction 30, (ii) at junction 1a, (iii) at junction 1b, (iv) at junction 2 and (v) after junction 2.

This information is not held.

The Department produces estimates of the number of vehicles per day using the main carriageway between motorway junctions (but not when they join and leave), available at the following link:

http://www.dft.gov.uk/traffic-counts/index.php.