The Evolution of Traffic Control Devices

What is the meaning of Semaphore in the context of traffic control devices?

• A system of sending messages using flags or poles

• A type of traffic light

• A method of directing traffic using hand signals

• A type of road sign

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Understanding word meanings

Who invented the traffic light with semaphore arms?

• John Peake Knight

• Thomas Edison

• Alexander Graham Bell

• Nikola Tesla

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Comprehending a text

Where was the first traffic control device created?

• Near the British House of Parliament

• On Westminster Bridge

• In response to horse-drawn traffic

• At the Tower of London

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Comprehending a text

What does caution mean in the context of traffic control devices?

• Speeding up

• Taking care to avoid danger or mistakes

• Ignoring safety measures

• Being reckless

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Understanding word meanings

What was the first traffic control device operated manually by a police officer?

• Semaphore with arms

• Traffic light

• Stop sign

• Speed bump

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Main ideas and supporting details