The **helmet** is a crucial element of passive safety for drivers of two-wheeled vehicles. Its main function is to **protect the head** in the event of an accident, distributing the impact force to prevent serious injuries. Additionally, the helmet prevents sharp objects from penetrating the head and protects the face and head from burns when dragged along the ground.

An important aspect of the helmet is its **ventilation**. It is essential that the helmet has enough holes to allow air to enter and exit. This not only improves the driver's comfort but also helps maintain an appropriate temperature inside the helmet, which is important at any time of the year, not just in summer.

Therefore, ventilation is a key factor in ensuring both the safety and comfort of the driver, making the correct answer to the question about the importance of ventilation in a helmet **"Yes"**.