Type this address in Google maps and it's right next to there. 154 Bay St, Brooklyn, NY 11231
They make you do circles in the middle of a street with 18 wheeler's and trucks flying by! Could they not find a parking lot so you don't get hit by a truck ?
This is less a specific location than it is an unlabeled place on the side of the road where the test guy just kinda happens to show up. Enjoy finding it!