Warnings that the road surface is about to stop behaving the way the last kilometre did — and the two general-purpose signs that stand in for anything without a symbol of its own.
Grip is a budget
A tyre has a fixed amount of grip available, and braking, steering and accelerating all spend from it. On a dry tarred road there is plenty. On a wet, loose, or polished surface there is much less, and it runs out sooner than people expect.
Every sign in this family is telling you the budget has shrunk. The response is the same each time: less speed, gentler inputs, more distance to the vehicle in front.
Where people lose the markChanging only the speed. Steering and braking need to become gentler too.
The rest of this lesson
- Loose surfaces
- Things that hit the road
- The two general warnings
- Water