Why might the same type of warning sign be placed farther from the hazard on a higher-speed road than on a slower residential street?
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Correct answer: D. Higher speeds need more distance to see, react to, and respond to the warning
Advance-warning placement is set to give drivers enough time to see the sign, process it, and react before reaching the hazard — at higher speeds that takes more distance to cover, so the sign has to be posted farther back.
Source: MTO Driver's Handbook: Ontario Traffic Manual, Book 6 — Advance warning placement
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