It's goes without saying that Global Positioning Systems (commonly known as GPS) can work wonders for certain senior drivers. One might have diminished eye site or compromised motor reflexes. The safe driver shouldn't be distracted with trying to decipher handwriting from a piece of scratch paper, he/she should be focused on getting to the destination as quickly as possible. So what's the best GPS system for seniors? At Eldergadget, there are two we think are particular standouts. 1. Garmin StreetPilot c330 3.5-Inch Portable GPS Navigator Save space on your dashboard for this Garmin model. The interface is quite intuitive; just punch in your destination and you are on your way. The voices are crisp and clear, even for those with hard hearing. And don't be put off by the 3.5 inch screen; while it might be a bit small, the letters are large enough to read and the 3D view is easy to follow. 2. TomTom ONE 125 3.5-Inch Portable GPS Navigator CNET's editor's say it best, "The TomTom One 125 isn't the newest or flashiest portable navigation device on the market, but that's OK." And we agree, especially because it is very easy and to use. The TomTom is a solid, entry-level GPS system and it will reliably get you from destination A to destination B and back. The tracking is impressively accurate and the sound is sufficiently crisp.