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Road Rules Foundation
Road Signs & Markings
Speed & Stopping Distances
Vehicle Knowledge
Human Factors
Load Safety
Adverse Conditions
Hazard Perception
Driving Within Your Vision
Every thread of this lesson converges on one rule, stated two ways.
By day: drive at a speed and scan pattern that let central vision reach every hazard before it becomes a threat — the antidote to both peripheral blindness and tunnel vision.
By night: never overdrive your headlights. Never travel so fast that your stopping distance exceeds the distance your lights actually reveal. Work the arithmetic: at 100 km/h your dry stop is around 92 m; if your dipped beams light 50 m of road, you are driving 42 metres beyond your ability to respond — committed to a stretch of road you cannot see. The maths is merciless and the rule is simple: you may only drive as fast as you can see to stop.
This is the Observe stage's contribution to the whole platform: every rule, distance and priority convention is worthless applied to a hazard you never perceived. Vision is where safe driving starts, and its limits are where speed should end.
Key takeaways
- One rule, two forms: by day, speed and scanning that let sharp vision reach hazards in time; by night, never overdrive your headlights
- Stopping distance must not exceed seeing distance — at 100 km/h a ~92 m stop on 50 m of beam is 42 m of road you're committed to and can't see
Quick check
At 100 km/h your dry stopping distance is about 92 m, and your dipped beams light about 50 m of road. What does that mean?