This setting allows you to enable/disable or modify notifications for Railway Crossings.
You can choose to Enable/Disable just the Sound notifications for Railway Crossings, which will stop/start giving audible notifications when approaching a railway crossing.
You can also choose what sound type or spoken instruction should the app use to warn you with when there is a railway crossing ahead.
Finally, you can change the distance how much in advance the app should warn you about railway crossings.