In GPS mode, the speed alarm can be set higher than the speed limit for the area you drive through.

some one on here complained about the lady that comes on the audio very loudly when you break the speed limit.

but I take two stars away because I can not figure out how to make the very very very loud voice go away when you exceed the speed limit with the NAV feature running.

I could live with it if I could tell it to announce if I were 10 mpg over the speed limit.

The one thing I do like well is it will tell you if your going over the speed limit while in GPS mode and it shows a small speed limit diagram of the speed you should be going in the left corner and changes color from white to brown showing you are speeding

"you are over the speed limit" while navigation is operating, is not annoying or loud at all unless you are really blasting music

but it has this annoying feature that lets you know (very loudly) when you are exceeding the speed limit.