How to Check the Rearview Mirror When Changing Lanes While Driving?

[EmilianoRose]

Driving and changing lanes method for checking the rearview mirror is: 1. When changing lanes, first turn on the turn signal, then observe the rearview mirror; 2. If the vehicle behind is seen in the left rearview mirror occupying about one-fifth of the left edge area, do not turn; 3. When the rear vehicle occupies one-third or half of the entire rearview mirror area in the left rearview mirror and the entire vehicle can be seen, a safe turning operation can be performed. The rearview mirror is a tool that allows the driver to directly obtain external information about the rear, side, and lower parts of the car while seated in the driver's seat. For the convenience of the driver's operation, to prevent traffic safety accidents, and to ensure personal safety, all countries require that cars must be equipped with rearview mirrors, and all rearview mirrors must be adjustable in direction.

[AdrianaLynn]

When changing lanes, my habit is a three-step process: first, a quick glance at the center rearview mirror to assess overall traffic flow, then focusing on the side mirror of the intended lane, and finally turning my head to check the blind spot. If I can see the entire front of the car behind me in the side mirror, it means there's enough distance to change lanes safely; if the car behind fills the entire mirror, it's better to wait. Speed is also crucial—on highways, I start observing 10 seconds in advance, and on urban expressways, 5 seconds ahead. Once, on a rainy day, I almost sideswiped a car because I neglected the blind spot. Since then, I double-check three times before changing lanes, like reviewing homework. Now, it's become second nature—when the car behind flashes its lights, I instantly know whether to steer or not.

[StEleanor]

My secret to lane changing is the graded observation method with mirrors: check traffic 50 meters behind through the interior rearview mirror, monitor vehicles within 30 meters in the side mirrors, and finally do a 45-degree head check for blind spots. Especially when driving at night, if the distance between headlights in the mirror suddenly shrinks, it means the following car is accelerating to overtake - this is absolutely not the time to change lanes. In rainy weather when mirrors get blurry, I proactively turn on the heating function or wipe them with tissues. Developing anticipation habits is crucial - like when seeing a highway exit sign, anticipate possible sudden lane changers and double-check the right mirror. When a tailgater follows too closely, I lightly tap the brake as a reminder, waiting until they slow down before safely changing lanes.

[DeBrantley]

Changing lanes while checking mirrors is like thinking three moves ahead in chess: maintain steady speed when checking mirrors, wait three seconds after signaling before turning the wheel, and calculate two seconds' distance for the following car. I've noticed many lane-change failures stem from incorrect mirror adjustment. My trick is to angle the side mirrors just until the door handles disappear from view, maximizing visibility. When a truck in the mirror appears as small as a sedan—a dangerous illusion—I mentally count 'one truck, two trucks' to time my lane change. Weekend drives with family make me most nervous about e-bikes suddenly appearing in blind spots; now I instinctively check mirrors before turning my head.