Rich Soule has written an interesting article about Corner Worker Looks. The Corner Workers tell us important information about what is happening on the next section of the track, especially if the visibility around the corner is reduced or nonexistent. On a track with 8 manned corner stations, the author manages to perform 27 corner worker looks.
http://carsandcode.com/tag/corner-worker-looks/ (http://carsandcode.com/tag/corner-worker-looks/)
Enjoy.
Thanks