Safe Vehicle Operation and Defensive Driving
The defensive mindset
Defensive driving means assuming other road users will make mistakes and leaving yourself time and space to react. The core tools are observation, anticipation, and the two-second rule. In rain this becomes four seconds, and in ice or fog at least double again. Scanning far ahead, checking mirrors every few seconds, and covering the brake when a hazard is developing are habits the exam rewards.
Speed, distance and visibility
Choose a speed from which you can stop within the distance you can see to be clear. Braking distance grows with the square of speed, so doubling speed roughly quadruples stopping distance. On wet asphalt grip falls and stopping distance rises sharply. Use dipped headlights in rain, fog and at night; use fog lights only when visibility is genuinely reduced, and switch them off afterwards to avoid dazzling others.
Overtaking and being overtaken
Before overtaking, check mirrors, signal, check the blind spot, and confirm you have enough clear road to return safely. Never overtake where visibility is limited or where a solid line forbids it. When being overtaken, hold your speed and keep right; do not accelerate.
Fatigue, alcohol and distraction
Fatigue impairs judgement as much as alcohol. Take a break every two hours on long trips. Any alcohol before driving is a risk; the legal limit is low and novice drivers should not drink at all. Phone use while driving is prohibited unless hands-free, and even hands-free conversation reduces attention.
Worked example
At 50 km/h you travel about 14 metres per second. Applying the two-second rule gives a following gap of roughly 28 metres. In rain, double it to about 56 metres. This is the arithmetic behind the standard answer to 'what is a safe following distance' questions.
Traps to watch
Questions often present a clear road as an excuse to exceed the limit; the limit is a maximum, not a target. Also remember that a lower speed is required whenever visibility, weather or traffic demand it.