**Roadworks** can pose a hazard, so it is important to follow the established signs and rules to ensure safety. During the day, roadworks do not need to be marked with lights unless weather conditions are adverse or it is nighttime. This is because, under normal daylight conditions, vertical signs and road markings are sufficient to warn drivers about the presence of roadworks.

**Delineation signs** are lights and devices that highlight the roadworks and help indicate the direction to follow, as well as the obstacles that may be encountered. These signs are especially important in low visibility conditions, such as at night or on dark days.


Therefore, during the day, it is only necessary to mark the roadworks with lights if weather conditions reduce visibility, thus ensuring that drivers can clearly see the signs and follow the appropriate directions.