Why should a driver never rely solely on the stop arm and warning lights without also visually confirming that approaching traffic has actually stopped?

Pick an answer

1. Some drivers illegally fail to stop despite the signals, so a visual confirmation adds an extra layer of safety
2. This concern applies only to two-lane roads without a center turn lane
3. Warning lights and the stop arm guarantee that all approaching traffic will stop without exception, so no check is needed
4. Visual confirmation is unnecessary once the signals have been activated

Correct!

Not quite. The correct answer is highlighted.