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Iowa Class C Knowledge Test Practice
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Passing target: 20/25 correct (TLA practice target)
Observation, Speed & SpaceStandalone practice
Before moving into an adjacent lane, what observation is needed in addition to checking mirrors?
Blue car A faces east in the right lane. Silver car B occupies the neighboring left lane beside A’s rear quarter. Both cars face the same direction.
Correct answer: Look over the shoulder to check the blind spot.
Why
Check mirrors, signal and look over the appropriate shoulder for the blind spot before changing lanes. Move only when the whole maneuver is safe. Driver-assistance warnings supplement these checks; silence from a sensor does not establish an empty lane.
Verified against Iowa Driver's License Manual · Blind Spots · p. 34, 44
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