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What does a yellow traffic signal indicate?

  1. Proceed with caution

  2. Prepare to stop

  3. Complete stop

  4. Speed up to clear the intersection

The correct answer is: Prepare to stop

A yellow traffic signal indicates that drivers should prepare to stop. This is a precautionary measure informing the driver that the light is about to change to red, signaling the end of the green light period. Instead of rushing to get through the intersection, it is essential to slow down and be ready to stop if it is safe to do so. This helps to prevent accidents and ensures a smooth transition for vehicles that are already approaching the intersection while the signal is still yellow. The purpose of the yellow light is to provide a warning that big changes in traffic flow are about to occur, allowing drivers time to react appropriately.