Luoyang Tianqi Dan is still in use today.

Operation method of simulating the use of night light:

1, "Driving at night without poor street lighting", operation: high beam;

2. "Follow the car in the same direction at night", operation: low beam;

3. "Encounter non-motor vehicles on narrow roads and bridges at night", operation: low beam lamp;

4. "Night Motor Vehicles", operation: low beam;

5. "Road failure or traffic accident at night hinders traffic and makes it difficult to move". Operation: headlights are changed to position lights+double flashing lights;

6. "Driving in foggy days", operation: turn on fog lights+double flashing lights+headlights;

7. "Passing through sharp bends, arch bridges, slopes, arch bridges, crosswalks or intersections without traffic lights at night", operation: alternately use far and near lights (flashing three times);

In some areas, there will be a "direct intersection" in the exam. Operation: alternate use of far and near light (flashing three times); "Turn left and right at night", operation: low beam, turn on the left and right turn signals;

Finally, he said, "The mock night exam is over. Please turn off all the lights and start the exam." Operation: Turn off all the lights.