I have looked on profile of today's stage of Tour de Suisse:
(The picture is taken from http://www.procyclingstats.com/races/profilesmaps/2014-06/Tour-de-Suisse-Stage-6-1403118873.png.)
There are three little blue symbols at the bottom. I suppose the middle one, with the cutlery, means feed zone. However, I was not able to guess the meaning of the symbols and , which seem somewhat like light bulb or a bottle.