Great question — answering as the UphillTech team:
The rule as given in VTA's Conditions for Passage (Section 4) reads (b) No passenger on a transit vehicle or in or on a transit facility shall: (7). Eat or drink or possess an open food or drink container where eating or drinking or possession of open food or drink containers is prohibited by sign or written notice. You'll probably recognize this infographic: The mug has the VTA logo on it, to signify that only the officially approved mug is allowed. There being no equivalent device for food, it is safe to say that eating remains prohibited everywhere— unless it's soup or something which you can pour into and consume from the approved mug. You can purchase food and bring it with you,...
Full answer by choster: https://travel.stackexchange.com/a/19171 (CC BY-SA 3.0).
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