2010 Rule changes
For full wording go to the BC website, but here is a summary:
All races will have two commissaires, the second can be a competant official to assist the Chief Commissaire.
Riders passing a pit area exit must continue to the next pit area if they have a mechanical, no doubling back.
A rider deliberately leaving the course will be deemed as having retired from the race.
Courses may have no more than 6 man made obstacles, lenth not to exceed 80m and height not to exceed 40cm.
Where planks are used, they must two off and 4m apart made of wood. Premier events only only a single section of planks are allowed.
There are also UCI rule changes affecting tyre width and the use of disc breaks but does not affect NW events.