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Question:
On steep mountain grades, __________ are built to stop runaway vehicles safely without injuring drivers or passengers.
A
escape ramps
explanation
Escape ramps are located on many steep mountain grades. Escape ramps are built to stop runaway vehicles safely without injuring drivers or passengers. Escape ramps use a long bed of loose, soft material (such as pea gravel) to slow a runaway vehicle, sometimes in combination with an upgrade.
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