Paul,
You might be referring to the national road traffic estimates (NRTE). These are published quarterly, with a yearly summary. Cycle data as part of these estimates is no longer published on a quarterly basis and this is because the level of variation in the data from one quarter to the next is such that it has called into question their veracity. Pooling the data for a year, however, continues.
I have been in discussion with the people at DfT about this along with Andy Cope of Sustrans. The idea is to try to encourage the DfT to add to the (rather low) number of 50 counters they have for tracking bicycles using the 300 or so counters used by Local authorities and reported to Sustrans on a regular basis as part of National Cycle Network Monitoring. (Note: there are thousands of counters for motor traffic, sorry exact figures not to hand).
They have recently done a data quality review of NRTE, and this report is on the DfT web pages.
Dr John Parkin
Reader in Transport Engineering and Planning
Department of the Built Environment
The University of Bolton
Deane Road, Bolton, BL3 5AB, UK
Tel 01204 903027 Fax 01204 399074 mob 07903 523 017
www.bolton.ac.uk/staff/jp10
________________________________
From: Cycling and Society Research Group discussion list on behalf of Paul Rosen
Sent: Thu 04/10/2007 1:26 PM
To: [log in to unmask]
Subject: Retracted DfT cycling data?
I have an idea that some DfT cycling figures were retracted recently.
Anybody have an idea what these were and when it happened ... web links???
Thanks,
Paul
|