Holding a referedum should be about serious issues like how we vote, and not the purview of the transportation ministry.
Do you feel that the question on the table is just "should we expand transit"?
Or is it more like "should we increase sales tax on everything in order to fund transit expansion"?
Again, I don't really have a personal stake in this, but I also don't think that consulting the electorate on how they want their money spent is some kind of Jedi Mind Trick. If the citizens don't want this, what's the rationale for doing it anyway? The government knows better?