Buick Regal Navigation Manual page 55

Navigation Voice Volume to change
the volume of the navigation
prompts.
Select the On or Off button to turn
the voice instructions on or off while
traveling on a planned route.
On or Off button to turn the traffic
voice prompt on or off while
traveling on a planned route.
Select
Select the
Press to display the Traffic
Settings menu.
disable the traffic feature.
Press to display a submenu of
sort options.
Press to enable or
Sort by Distance Press to
display traffic events in order of
distance with the closest event
shown first.
Sort by Name Press to
display traffic events in
alphabetical order.