The **high beam** or **main beam** is a powerful white light used to illuminate long distances in front of the vehicle. This light is mandatory under certain conditions and can dazzle other drivers if not used properly.

- **Use as a warning signal:** It is allowed to use the high beam to warn other drivers of a danger. However, it is important to do so in a way that does not cause dazzling. Therefore, the light should be turned on and off **intermittently and at very short intervals**. This allows alerting other drivers without affecting their visibility.

- **Prohibitions:** The high beam should not be used continuously or for prolonged periods, as this can dazzle other drivers, especially in urban areas or when the vehicle is stationary.

In summary, to use the high beam as a warning signal safely and effectively, it is crucial to do so with **very short intervals** to avoid dazzling other drivers.