Which light signal indicates that you have...

Question 1 / 2066636ee928f7522a1c519aba

Question 1 of 2066636ee928f7522a1c519aba

Which light signal indicates that you have permission to enter a lock on the Ohio River?

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Question 1 of 20

66636ee928f7522a1c519aba

Which light signal indicates that you have permission to enter a lock on the Ohio River?

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🔍 Key Concepts

• U.S. Army Corps of Engineers lock signal lights used on inland rivers • Difference between steady vs. flashing light indications • Standard meanings of red, green, and amber in lock/traffic control situations

💭 Think About

• Think about how colors are typically used: which color usually means "proceed," which means "stop," and which means "caution" in navigation and traffic control? • How does a flashing light usually differ in meaning from a steady light in control systems (locks, bridges, traffic signals)? • Which light signal would logically be used to clearly tell multiple approaching vessels that the chamber is ready and you may enter now?

✅ Before You Answer

• Verify how green vs. red are normally used for permission vs. prohibition at locks and bridges. • Check what role amber (yellow) typically plays: is it a full permission, a warning/stand-by, or something else? • Consider whether "flashing" or "steady" would be more appropriate to draw attention to a "you may enter" indication for an approaching tow or vessel.

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Question 1 of 20

Which light signal indicates that you have permission to enter a lock on the Ohio River?

Steady red

Flashing green

Flashing amber

Steady green

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Question 1 / 2066636ee928f7522a1c519aba

Question 1 of 2066636ee928f7522a1c519aba

Which light signal indicates that you have permission to enter a lock on the Ohio River?

Back

Question 1 of 20

66636ee928f7522a1c519aba

Which light signal indicates that you have permission to enter a lock on the Ohio River?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed