Judge the distance between vehicles by observing the left rearview mirror

When the vehicle body behind you has entered the danger zone to the left of the dotted line of the rearview mirror，Indicate that the car behind you is very close to your car，Almost within 5 meters，Cannot turn at this time；When the left side of the vehicle behind is close to the boundary between the safe zone and the dangerous zone，We should be more vigilant，But it is still safe to turn with the lights on at this time。If the car behind is in the safe zone，Located in the center of the rearview mirror，Indicate that the distance between the car behind you and your car is 15-20 meters，Steering operations can be performed normally。The car behind is in the safety zone，Located on the right side of the center of the rearview mirror，Indicate that the distance between the car behind you and your car is large，Steering operations can be performed normally。

Judge the distance between vehicles by observing the right rearview mirror

If we drive on the left，When you need to merge to the right，We should pay special attention to the right rearview mirror，The situation in the right lane is more difficult to master than the left lane，So when judging the distance to the car behind，We need to be more cautious。

If the car behind occupies half of the rearview mirror area，Only half of the Seabetbody is visible，At this time，The car behind you is very close to your car，Your car should stay in the existing lane，Should not merge。If the car behind occupies half of the area of ​​the exterior rearview mirror，Can see the whole car。At this time，The car behind you is about 10 meters away from your car，You can turn on the lights and perform steering operations when the vehicle speed is slow。The car behind occupies 1/3 of the area of ​​the exterior rearview mirror，Can see the whole car。At this time，The car behind you is about 15 meters away from your car，Can perform steering operation。The car behind occupies 1/4 of the area of ​​the exterior rearview mirror，Can see the whole car。At this time，The car behind you is about 24 meters away from your car，Can perform steering operation。

Judge the distance to the vehicle behind through the interior rearview mirror

If the rear air intake grille is completely blocked，At this time, the distance between the car behind and the car in front is 3 meters。While following a car at a slow speed，This distance is still a safe distance；If the vehicle speed is high, you should speed up or change lanes to avoid getting too close to the vehicle behind you。The front bumper of the rear car is completely covered，At this time, the distance between the car behind and the car in front is 8 meters。If the vehicle speed is higher，Should accelerate or change lanes to keep a sufficient safe distance from the vehicle behind。The lower edge of the rear tire can be seen，At this time, the distance between the car behind and the car in front is 23 meters。At this distance，Safe speed should be 25 km/h。