Theory Test Prep

Speed & Stopping Distances

Kenyan speed limits and the science of stopping — thinking distance, braking distance on dry, wet and murram surfaces, and safe following gaps.

Topics in this module

1. 1The Physics of Stopping

   • Reaction Distance
   • Braking Distance
   • The Full Calculation, Worked
   • Sorting Factors Into Stages
2. 2The Full Stopping Table

   • The Table, and the Assumptions Under It
   • Rebuilding Any Row From Scratch
3. 3Kenya's Speed Limits and Why Each Exists

   • Two Dimensions, One Binding Answer
   • Each Limit, Translated Into Metres
   • The 30 km/h Zone: A Survival Threshold
   • Two Objections, Answered
4. 4What Changes Your Numbers

   • One Variable to Rule Them: Friction
   • The Wet Season: Three Distinct Problems
   • Murram: The Surface That Won't Hold Still
   • The Vehicle-Side Multipliers
   • Gradient, and How the Multipliers Stack
5. 5Braking Technique: ABS and Non-ABS

   • A Sliding Tyre Neither Stops Nor Steers
   • ABS: What It Does, and the One Instruction
   • Non-ABS: Threshold Braking, and Cadence as the Fallback
   • Know Your System Today
6. 6 Following Distance in Practice