Missed on ramp in Pittsburg once. Drove on and road turned single land with cars on both sides, stopped in road and turned on flashers. Walked down road to local business and they told me to go only a qtr mile and turn at a gravel lot. I was afraid to go any farther. When I got there it was only a few mins till a swift driver showed up and had done the same thing I did, they made me feel better.