Raoul, as I'm sure you're aware, all the best figures are rough estimates at best. No-one really knows how much cycling has risen in London. However, it is generally accepted that levels of cycling have more than doubled between 2000 and 2010.
Check the following data sources:
(1) Census figures--2001 figures are the latest figures available;
(2) TfL Central, Inner, and Outer Cordon data;
(3) Local authority figures--patchy and rarely available;
(4) DfT Matrix figures--but beware, as a large percentage of these are only educated guesses;
(5) Thames bridges screenline counts;
(6) and TfL Travel in London reports--however, there are concerns about a good deal of that data and its interpretation, so treat it with caution--it has shown some strange fluctuations.
So, try to avoid the temptation to give 'exact' figures--they don't exist.
Even if data-gathering mechanisms were better, it would be all but impossible to give exact figures. Street traffic movements in a complex city like London are too difficult to quantify to make that possible.
Raoul, as I'm sure you're aware, all the best figures are rough estimates at best. No-one really knows how much cycling has risen in London. However, it is generally accepted that levels of cycling have more than doubled between 2000 and 2010.
Check the following data sources:
(1) Census figures--2001 figures are the latest figures available;
(2) TfL Central, Inner, and Outer Cordon data;
(3) Local authority figures--patchy and rarely available;
(4) DfT Matrix figures--but beware, as a large percentage of these are only educated guesses;
(5) Thames bridges screenline counts;
(6) and TfL Travel in London reports--however, there are concerns about a good deal of that data and its interpretation, so treat it with caution--it has shown some strange fluctuations.
So, try to avoid the temptation to give 'exact' figures--they don't exist.
Even if data-gathering mechanisms were better, it would be all but impossible to give exact figures. Street traffic movements in a complex city like London are too difficult to quantify to make that possible.