Narrator: If you've driven any one of the many highways crisscrossing the world, chances are you've seen one of these: a truck escape ramp. Some escape ramps slope ... like how steep the grade ...
Narrator: If you've driven any one of the many highways crisscrossing the world, chances are you've seen one of these: a truck escape ramp. Some escape ramps slope ... like how steep the grade ...
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