The **rearview mirrors** are essential elements in a vehicle that help improve the **rear and side vision** of the driver. These mirrors allow the driver to see what is happening behind and to the sides of the vehicle, which is crucial for safe driving.

- **Rear and side vision**: The rearview mirrors are designed to provide a clear view of what is happening behind and to the sides of the vehicle. This is important for changing lanes, reversing, and being aware of the surrounding traffic.

- **Types of rearview mirrors**: In vehicles such as cars, vans, and trucks, several types of rearview mirrors are used. There is a mirror on the left side, one in the center inside the vehicle, and another on the right side, which, although not mandatory, is recommended to improve side visibility.

- **Blind spots**: Despite the assistance provided by the mirrors, there are areas called **blind spots** that cannot be seen through them. It is important for the driver to turn their head to check these areas before performing maneuvers such as changing lanes.


In summary, rearview mirrors are fundamental for improving rear and side vision, helping the driver maintain adequate control of the vehicle's surroundings.