Theory Mastery

Challenge: 3-second rule: greater following distance in rain, snow, fog and heavy loads

'Double your distance' is a rule of thumb you sometimes hear for bad weather. That sounds logical, but the book names a different number: 3 seconds, not 4. The difference between '1.5x as much' and 'double' seems small, but on the exam that exact difference is what gets tested.

Topic: 3-second rule: greater following distance in rain, snow, fog and heavy loads

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