Checking blind spots when changing lanes is a key step to ensure driving safety, and correct operation requires combining rearview mirror adjustment, head-turning observation, and technological assistance. First, accurately adjust the interior rearview mirror and the left and right exterior rearview mirrors: for the left exterior rearview mirror, It is best to position the horizon in the centre with the vehicle body occupying one-fourth of the mirror; for the right one, the vehicle body should occupy one-fifth to maximize the field of view. Before changing lanes, quickly turn your head 45 degrees to observe the side and rear. This action can cover the rearview mirror blind spots. Special attention should be paid to electronically adjustable rearview mirrors that may be equipped on new energy vehicles, as they require operation through the central control interface. Modern vehicles are generally equipped with Blind Spot Detection (BSD) systems. Before changing lanes, activate the turn signal at least 3 seconds in advance and observe the reactions of vehicles in the target lane. If the following vehicle flashes its headlights or accelerates, this may indicate unfavorable timing for lane changing. Additionally, features such as 360-degree panoramic cameras and wide-angle rearview mirrors can further minimize blind spots, though their lenses require regular cleaning to maintain proper functionality. Particular caution should be exercised when changing lanes on highways or in heavy traffic-maintain steady speed and keep a minimum following distance of 3 seconds from adjacent vehicles to prevent accidents caused by blind spot misjudgment. Cultivating the "signal-mirror-check" routine (i.e., signal first, check mirrors next, then perform a head check for confirmation), combined with the vehicle's technological features, can systematically reduce lane-changing risks.
