New South Wales · Driver Knowledge Test (DKT) · Road safety

How much more likely is a car to kill a pedestrian it hits at 50 km/h compared with 40 km/h?

The answer

  • Ten times as likely
  • About the same
  • Around 25% more likely
  • Twice as likely Correct

Why that's the answer

If a car collides with a pedestrian at 50 km/h, the impact is twice as likely to kill them as it would be at 40 km/h. Small differences in speed make large differences to the outcome — which is why lower limits exist where people walk.

Where this rule comes from

Take the full New South Wales practice test (153 questions)

More NSW DKT questions

Same topic first — road safety trips up more learners than any single rule.

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