Formation simulator
Room to react.
Set the speed and the road, drop a hazard in front of the group, and watch the lead's signal pass back to the sweep. The numbers show what two seconds really means at that speed.
Speed
Road
Formation
Put a hazard ahead
In your track–2 seconds
Diagonal–1 second
To stop–about, with 1 s to react
Group length–lead to sweep, 7 riders
The club rides two seconds to the bike in your track and one second to the diagonal. In the wet, braking takes longer, so the simulator doubles both. Stopping distances are rough estimates for a loaded motorcycle; your bike, tyres and skill change them.