Which switch size can you go over at 45/40 mph?

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Prepare for the Amtrak Signal Maintenance Training Level 1 exam. Study with multiple choice questions, each accompanied by hints and explanations. Equip yourself for success on your first attempt!

Multiple Choice

Which switch size can you go over at 45/40 mph?

Explanation:
The speed you can safely travel through a turnout depends on its size—the larger the switch, the higher the through speed it can handle. Since you’re allowed 40 mph through the turnout, you need a switch size that supports that speed. Among the options, the largest switch is the one that can carry 40 mph through it, while the smaller switches are only rated for much lower speeds. So the best match for a 40 mph through-turnout requirement is the larger-size turnout, which is why that choice is correct.

The speed you can safely travel through a turnout depends on its size—the larger the switch, the higher the through speed it can handle. Since you’re allowed 40 mph through the turnout, you need a switch size that supports that speed. Among the options, the largest switch is the one that can carry 40 mph through it, while the smaller switches are only rated for much lower speeds. So the best match for a 40 mph through-turnout requirement is the larger-size turnout, which is why that choice is correct.

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