It reads street, and highway lane names.. The where am I ?, Point of interest (POI) features are very useful. It stores location when you remove it from the vehicle mount. It takes you back to your car in a mall parking lot. It re-routes fast without complaining & asking you to turn around. Easy to add and change order of "via" points. You can pre-program easily at home.
I suggest that potential buyers & users go to the GPS Magazine site and read the Garmin 885T review with step-by-step photos & examples of its functions. The 855 is the same unit without Blue Tooth & the Microsoft network.