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1. When did this change occur in the state of South Carolina?

In 2013, SCDOT began to install flashing yellow arrow (FYA) signals throughout the state. The first one was installed in the Columbia area and their use is quickly spreading across South Carolina.

2. Why the change?

This change is the result of a national study conducted for the Federal Highway Administration, which demonstrated that the new signals:
• Help to prevent crashes
• Move more traffic through an intersection
• Provide additional traffic management flexibility

3. 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.