Redstone, Good that I made myself clear this time. One time, about 9 years ago, I was going on I-495 towards Virginia after paying homeage to Shiva Vishnu Temple. But I started seeing signs for mileage towards NY. I had to take a U-turn. Later I came to know what went wrong, and what it means to drive on a beltway... if you begin going North, you eventually will be going South at one point, so on your way back you should take an exit to North again to get on track.