The Roadlapse mode uses GPS data from your smartphone. It takes a picture automatically each time you pass the set distance with your vehicle. The distance unit can be either Meters or Feet. You can set the distance unit under the Settings menu. This mode has two parameters, Distance and Frame.
Distance: This parameter specifies how much you need to travel before triggering the camera gain. You can set any value from 1 to 65535 in meters or feet. Please note that the GPS data of smartphones have a certain level of accuracy. This usually ranges about 10 to 20 meters. This can also change from phone to phone. So, if you set this value to a very low distance, the mode might not work as expected. The distance must be coordinated with the accuracy of your smartphone and the speed of your vehicle.
Frame: This parameter specifies how many pictures need to be taken. You can set the value anywhere between 1 and 65535.
After you have set the parameters, you can touch the Start button to start the process.