What is the Rearview Mirror (Dikiz Aynası) in Turkish Traffic Law?\n\nIn Turkish traffic legislation governed by the General Directorate of Highways (KGM), the internal rearview mirror (iç dikiz aynası) is classified as mandatory safety equipment for passenger vehicles. Its primary legal and practical purpose is to provide the driver with a clear, unobstructed view of the lane directly behind the vehicle. Turkish road regulations specify that all mirrors must be in perfect condition, clean, and properly adjusted before a vehicle is driven on public roads. Understanding this equipment is crucial for the MTSK e-sınav, where questions frequently test the driver's awareness of their vehicle's surroundings.\n\n## Why the Rearview Mirror is Vital for Road Safety in Türkiye\n\nDefensive driving in Türkiye requires constant situational awareness, particularly on high-speed motorways (otoyollar) and crowded urban centers like Istanbul, Ankara, or Izmir. The rearview mirror acts as your third eye, allowing you to monitor the behavior and speed of vehicles behind you. It is particularly critical when preparing to decelerate, as checking the mirror helps you determine if the vehicle trailing you has enough space to stop safely. In the event of emergency braking, a quick glance at the rearview mirror can help you decide whether to steer onto the shoulder to avoid being rear-ended.\n\n## How to Correctly Adjust Your Rearview Mirror\n\nBefore starting your vehicle's engine—especially during the practical Turkish driving test (direksiyon sınavı)—you must adjust your seat first, and then your mirrors. To adjust the internal rearview mirror correctly, sit in your normal driving position. Grasp the outer frame of the mirror and adjust it so that the entire rear window of the vehicle is framed perfectly within the mirror. You should not have to move your head to see through it; only a slight movement of your eyes should be necessary to check traffic behind you. Keep the glass clean and avoid placing large objects on the rear parcel shelf that could block your line of sight.\n\n## Rearview Mirror Questions in the Turkish Ehliyet Exam\n\nThe Turkish driving theory exam frequently includes questions regarding mirror usage sequences. A common exam concept is the 'Mirror, Signal, Maneuver' rule. Candidates must understand that before signaling or changing lanes, the very first action is always to check the rearview mirror to assess the traffic flow behind. Exam questions may also ask about the dangers of poorly adjusted mirrors, driver distraction, or the specific times when checking the mirror is mandatory, such as prior to braking, turning, or overtaking.\n\n## The Crucial Difference: Internal Rearview Mirror vs. Side Mirrors\n\nLearners often confuse the roles of the internal rearview mirror and the external side mirrors (dış dikiz aynaları). While the internal mirror gives you the most accurate depth perception of vehicles directly behind you, it cannot cover the areas to the sides of your car. These lateral blind spots must be monitored using your side mirrors and validated with a physical shoulder check. Safe driving in Turkish traffic requires a continuous scanning pattern: looking ahead, checking the internal rearview mirror, and scanning the side mirrors every few seconds to maintain a complete mental map of the surrounding vehicles.