Here is how it works:
+ Measure bike share in the simplest way, i.e. only gross counting, e.g. with bike counters in major cycling corridors. The result is the base bike modal share.
+ As much as possible, record who is cycling (see 1, above), how they are cycling (2) and where they are cycling (3).
- Subtract the second from the first, separately for each three catergories. The results are the bike modal share subtotals.
/ Average the combination of all three. The result is the