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Idaho Class D Knowledge Practice Test
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Weather, Visibility & EmergenciesStandalone practice
How should your speed relate to the distance illuminated by your headlights at night?
Blue car A faces east in the center of its lane on an unlit straight two-way road. Its working headlights illuminate part of the road ahead.
Correct answer: Be able to stop within the lighted distance
Why
If stopping distance extends beyond what the headlights reveal, a driver may reach a hidden hazard before being able to stop.
Verified against Idaho Driver’s Handbook, July 2026 · Outdriving headlights · p. 108, 109
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