Basically don't be surprised if the track is blocked, people/debris in/on the road etc .. what is never seemingly taken into account when a bollocking is dished out to the riders is that 70mph feels like walking speed when you've been rattling along at 150+mph and your brain is working at 2x+ the speed it normally works at.

A question i'd like some info on is the "lack of adhesion" flag meaning - lack of adhesion from what exactly ?? water ?, treated oil spill ? coolant ? the same flag goes out for a rain shower as goes out for cement dust in the road and there's a huge difference in grip