This was after compulsory helmet legislation was introduced in July 1992, compelling cyclists of all ages to wear a helmet whilst riding a bicycle in any public place. This advice is wrong.
Cycling is, obviously, a highly seasonal activity.
It is obvious that comparisons between figures for different times of the year are not valid. However, there were four sites counted in December 1993, rather than January or February 1994. This figure is based on data from early 1994. Perhaps another study should be conducted on this, and any future surveys on numbers of cyclists should also take into account helmet wearing rates, since any increase in cyclists may well be purely the result of lax law enforcement. It is also possible that the activities of anti-helmet law advocates may be undermining public faith in helmets as the solution to bicycle safety, leading to more cyclists but lower helmet wearing rates.