The constant Free lane speed characterizes the detected road area and stores to the database if for the time of data acquisition no vehicle has been registered.

Setting up the Free lane speed is done in the following way:

1. Go to the Vehicle Processor settings panel.
   
2. In the Vacant lane speed, km/h field enter the speed in km/h of a free stream speed in the detection zone (1).
3. Click Apply to save the changes (2).

Setting up the free stream speed is completed.