To work with the Traffic analysis module, you must specify the road markings settings. To do this, do the following:

1. Go to the settings panel of the Traffic analysis object.
   
2. Click the Set markings button to open the editing utility.
3. In the Select frame window that opens, click the Select frame button to stop the video and specify the road markings in this frame.
   
   A utility for editing road markings opens.
4. In the editing utility, mark traffic lanes on the selected frame:
   1. Select Lines → Draw new line. Select Clear lines to delete a line.
      
   2. Mark the borders of the roadway.
   3. Repeat steps 4a and 4b as many times as there are lanes on the roadway.
      
5. Mark the borders of stationary objects:
   1. Select Lines → Draw new obstacle.
      
      
   2. Mark the borders of stationary objects.
   3. Repeat steps 5a and 5b as many times as there are stationary objects in the frame.
      
      
6. Mark the direction of movement in the lanes:
   1. Select Lines → Stop drawing.
      
      
   2. Point the arrows that appear on the lanes in the direction of traffic. This is required to generate an event of entering an oncoming lane.
      
      
7. Select Lines → Save lines to save the specified markings to a JSON file next to an EXE file.
   
   
8. Calibrate dimensions:
   1. Specify pixels to correspond to meters:
      1. Select Calibration → Draw calibration grid (1) to specify the dimensions of a calibration grid;
         
         
      2. Double-click a dimension. A window for editing the corresponding dimension of a calibration grid opens: Height or Width;
         
         
      3. In the Enter a number field, specify a value in meters;
      4. Press the Enter key;
      5. Repeat steps 8aii-8aiv for a second dimension of a calibration grid.
   2. Select Calibration → Make calibration to calibrate the dimensions according to the calibration grid specified in step 8a (2);
   3. Select Calibration → Save calibration to save the specified calibration to a JSON file next to an EXE file (3).
9. Select Exit to close the editing utility.
   
   

Specifying the road markings settings is complete.