LAS VEGAS - A viewer wants to know what painted white X's on valley roads signify.
In 2010, Traffic8 reported on a similar marking near Millcroft Drive and Pecos Road. The "X" is white, and each of the intersecting lines is approximately five feet long.
The "X" is spray painted on the road to mark intersections for the purpose of aerial photography. Clark County, certain agencies and other companies use those markings to take aerial photos.
The photos are used for land-use planning, development, surveillance, environmental studies, commercial advertising and topographic maps.
The marks slowly disappear, because the county spray paints the designated intersections, takes aerial photos in the spring and fall and lets the letters fade.
What's driving you crazy? You can e-mail your traffic questions and complaints to Brian Loftus.