I’m researching areas to detect using old DOT maps and I keep seeing a symbol that isn’t on the map legend. Does anyone know what this means? Ive noticed them at different intersections of roads.
Here’s a link to the original map: https://gis.penndot.gov/BPR_PDF_FILES/MAPS/Type_10_GHS_Historical_Scans/Huntingdon_1941.pdf
Here’s a link to the original map: https://gis.penndot.gov/BPR_PDF_FILES/MAPS/Type_10_GHS_Historical_Scans/Huntingdon_1941.pdf
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