I have a GPS, actually my second one, first was worn out. I use Garmin, be sure yours has lane assist. It tells you what lane to be in if you have 2 left lanes. This way if you make an immediate right lane, you know to be in the right hand left turn lane. If you make a wrong turn, or a street is closed, it gets you back on track. I spend time the night ahead of time planning my route, then enter all of the address' into the GPS. My first GPA cost $99, and I truly believe I made that back within a month. Perhaps my best expenditure ever!