Using the rearview mirror’s night or auto-dimming function is a simple but effective way to reduce glare and fatigue when driving after dark. In manual mirrors, flipping the small tab changes the angle of the reflective layer, so you see a dimmer, secondary reflection instead of the full-strength glare. In automatic systems, sensors detect bright lights and electronically darken the mirror, adjusting the tint as conditions change to maintain a comfortable, usable view.

Making this a regular habit whenever you drive after dusk can support safer, more relaxed trips. When combined with a clean windshield, properly adjusted side mirrors, and correctly aimed headlights, the rearview dimming feature helps protect your night vision and reduces the mental effort needed to track vehicles behind you. By relying on a tool built into most modern vehicles, you maintain awareness of surrounding traffic while keeping your focus on the road ahead.