Why is it a better left-turn signal?
• It's safer - The study demonstrated that drivers made fewer mistakes with the new signals than with traditional left-turn arrow signals.
• It's more efficient - The new signals provide traffic engineers with more options to handle variable traffic volumes.
• It's more consistent - You'll see the same signals in every state because the new signals are being introduced throughout the United States.

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1. When did this change occur in the state of South Carolina?
2. Why the change?
3. Why is it a better left-turn signal?