Adverse Conditions · Topic 1 of 3 · ~1 min read

Rain and Wet Roads

Nothing in this module is new physics. Rain doesn't change how your brakes work — it changes how much grip they have to work with, and how far ahead you can see. What Changes Your Numbers already showed wet tarmac stretching an 80 km/h stop from roughly 65 to 97 metres. This lesson is what that means on a Kenyan road, where the most dangerous rain is often the rain that has only just started, and where standing water hides more than depth.

1. 1. The First Rain Is the Worst RainExplain why grip collapses when rain first falls after a dry spell, and why the danger falls as the rain continues.
2. 2. Aquaplaning: When the Tyres Stop Touching the RoadDescribe the aquaplaning mechanism, identify what raises the risk, and apply the recovery — which is to do almost nothing.
3. 3. Wet-Weather TechniqueApply the handbook's wet-driving technique — smooth inputs, planning ahead, and increased following distance.
4. 4. Standing Water and Flooded CrossingsTreat puddles and flooded sections as hazards, apply the unknown-depth rule, and dry wet brakes afterwards.
5. 5. The Rain CalendarAnticipate when the season concentrates first-rain risk, and hold the durable rule separately from the calendar.