The **high beam** or **main beam** is primarily used on roads outside towns or cities, especially when driving at night and there is little natural light. However, it is important to note that **this light should not be used if there is a possibility of dazzling other road users**. Dazzling other drivers can be dangerous, as it can affect their visibility and reaction ability.

- **Prohibitions**: It is prohibited to use high beams within towns and cities, and when the vehicle is stationary. Additionally, although they can be used to warn of a danger, they should be turned on and off intermittently to avoid dazzling.


Therefore, the correct answer is that you should not drive with the high beam on when there is a possibility of dazzling other users.