When are special vehicles required to signal their presence?
Special vehicles
Special vehicles must signal their presence both day and night to warn other drivers and prevent accidents.
Explanation
**Special vehicles** are required to signal their presence both during the day and at night when traveling on a public road. This is because these vehicles, which perform improvement or maintenance work on the roads, must be visible to other drivers at all times. To achieve this, they use a **yellow light** that remains on while they are in operation, ensuring that their presence is noticeable and preventing possible accidents. This safety measure is essential to alert other road users to the presence of these vehicles, regardless of the time of day.
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