* judith wrote:
when you went "up and down kerbs" - care to explain?

The cycle path I use to get to work (which is not on the road) joins the
road further along and there is a small kerb of about an inch or two
where is then runs as a red painted cycle lane. In fact there are quite
a few like this where I live (where cycle paths separate from the road
later join a main road with a dropped kerb). Every time I used go up
and down these, despite the drop being only very small, the jolts used
to cause the front light to spin round, usually ending up with me being
blinded.