When you approach an octagonal sign, you must:

Slow.
Stop.
Turn.
The Correct Answer and Explanation is :
The correct answer is Stop.
An octagonal sign, as shown in the image, is a stop sign. It is universally recognized as a traffic control sign that requires drivers to come to a complete stop at an intersection or where the sign is posted. Here’s a more detailed explanation:
Purpose of a Stop Sign:
The stop sign is a regulatory traffic sign that indicates to drivers that they must stop their vehicle completely at the marked stop line, crosswalk, or before entering an intersection. The intent behind the stop sign is to ensure that vehicles do not enter an intersection or roadway without first checking for oncoming traffic or pedestrians, thus preventing accidents.
Legal Requirement:
In most jurisdictions, including Tennessee, the law requires drivers to come to a full stop at stop signs, regardless of whether other vehicles or pedestrians are present. A full stop means that the vehicle must be brought to a complete halt, not just a slow roll or a brief pause. After stopping, the driver must yield to other vehicles or pedestrians who have the right of way before proceeding through the intersection.
Safe Driving Practices at a Stop Sign:
- Approach cautiously: As you approach a stop sign, reduce your speed and prepare to stop. Always look for any other vehicles or pedestrians.
- Stop at the correct place: Stop behind the stop line, crosswalk, or intersection. If there are no markings, stop before entering the intersection.
- Look both ways: After stopping, look left, right, and left again to ensure it’s safe to proceed.
- Proceed when clear: Once it is safe, you may proceed, yielding to any other vehicles or pedestrians who have the right of way.
Failure to stop at a stop sign is considered a traffic violation and can result in fines or penalties. The primary goal is to maintain safety and prevent accidents at intersections.