What must you reckon with when you see this traffic sign?

The traffic sign you see indicates roadworks, which brings certain risks and conditions for drivers. When you encounter this sign, it’s important to be aware of the following:

1. **Traffic from road construction vehicles**: This means you should expect vehicles entering or leaving the work zone, which may affect the flow of normal traffic.

2. **Men at work on the roadway**: You should be cautious of construction workers who may be nearby. Their safety is a priority, so reducing speed and being vigilant is essential.

3. **Construction materials on the roadway**: There may be materials or equipment left on the roadway that could obstruct your path or pose hazards.

Understanding all these elements helps ensure safety for both drivers and workers. Missing any part of the answer could lead to being unprepared for potential hazards and could increase the risk of accidents in areas under construction. Always approach such signs with caution and attentiveness.