Which of these is NOT a guidance device?
Signage: Beacons and temporary signage
Explanation
To understand why the **circulation milestone** is not a guidance device, it is important to know the functions of beaconing and guidance devices.
- **Beaconing devices**: These are lights, signs, and devices that highlight works and obstacles on the roads. Their main function is to **indicate the direction** to be followed and warn about possible dangers. Examples of these devices include provisional directional panels and flashing yellow lights.
- **Barrier delineator** and **flat beacon**: Both are guidance devices. Delineators are used to improve the visibility of barriers, especially in low-light conditions, helping drivers to follow the correct path. Flat beacons also serve to guide drivers, indicating the direction and delineating the path.
- **Circulation milestone**: Although it is an element present on the roads, its function is not to guide drivers in the right direction nor to warn about dangers. Therefore, it is not classified as a guidance device.
In summary, the **circulation milestone** does not fulfill the guidance functions that barrier delineators and flat beacons do, so it is not considered a guidance device.
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