A Union Pacific maintenance crew member flags the North Kilbourn Avenue crossing for the switching local. Chicago Illinois. January 2007.

A Union Pacific maintenance crew member flags the North Kilbourn Avenue crossing for the switching local. Chicago Illinois. January 2007., a photo by Eddie from Chicago on Flickr.

I took this photo on a very bitterly cold Winter morning, back in January of 2007.

With an outside temperature of 5 degrees above zero Farenheight and plenty of bright sunshine, the locomotive engineer of a Union Pacific Railroad switching local, is being flagged across the North Klbourn Avenue railroad crossing, inside Chicago's Northwest Industrial Park.

The operator of this Union Pacific model EMD GP 15 light roadswitcher, has just dropped off a box car on a local industrial spur siding. The man flagging the North Kilbourn Avenue railroad crossing, is a member of a nearby working U.P maintenance of way department crew.