An interior rearview mirror is a reflective device mounted inside a vehicle, typically on the windshield or the interior roof, which allows the driver to view the area behind the vehicle. This mirror is essential for providing the driver with a clear and unobstructed view of the traffic and surroundings behind the car. The design of the interior rearview mirror is usually a flat or slightly curved piece of glass with a reflective coating on one side. It can be adjusted by the driver to minimize blind spots and ensure optimal visibility of the rear area while driving.