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Within last few days noticed 3 white painted Xs on the street asphalt in my neighborhood. 2 of them are in center of intersectons. The other is close to an intersection but not in center of road. Any idea what these are for?
Hello Walter! I have consulted with our in-house cartographer and he assured me the "Northport Station" is in fact in "Northport, NY 11768." I would recommend re-checking your census maps so you can provide more accurate information in the future.
With a little help from Google, oftentimes white Xs are used in surveying for aerial photography.
The X provides a point of reference in the aerial photo that can be correlated to actual ground measurements and that way the aerial photo can be calibrated so that it is more accurate.
Well, I rented a jackhammer and did not find any buried treasure, though the anvil fell on the compressor so I guess I'm SOL on my deposit.
The markings in question are approx 12" x 12" , pretty small, in a completely residential area. No boxes to block, no LIRR nearby, nothing but houses and a golf course. Thought maybe my wish of a 4 way stop sign was coming true.
I guess its possible they could be used for aerial distance calibration and are in center of intersection for clarity.
well, i rented a jackhammer and did not find any buried treasure, though the anvil fell on the compressor so i guess i'm sol on my deposit.
the markings in question are approx 12" x 12" , pretty small, in a completely residential area. No boxes to block, no lirr nearby, nothing but houses and a golf course. Thought maybe my wish of a 4 way stop sign was coming true.
I guess its possible they could be used for aerial distance calibration and are in center of intersection for clarity.
Status:
" Charleston South Carolina"
(set 2 days ago)
Location: home...finally, home .
8,814 posts, read 21,273,545 times
Reputation: 20102
Thread closed once again so that keeper & I can review it.
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