Ramp signals:
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Are not considered traffic control devices.
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Control the weight of trucks entering an expressway.
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Control the speed of vehicles entering an expressway.
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Control the rate of vehicles entering an expressway.
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Explanation
Ramp signals control the rate of vehicles entering an expressway and can alternate between red and green. Drivers must wait for the green signal before entering the expressway.
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Other questions in the same category: Highway Driving Techniques
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