As others making comments here have already noted, Cannabis is already widely (albeit illegally) consumed & a major traffic & worksite safety concern. Reducing the dangers entailed is indeed an important public safety objective but delaying legalization or aggressively limiting the circumstances for legal purchase & consumption of Cannabis from licensed vendors is, therefore, both misguided & counterproductive. 

The same applies to measures to aggressively cap buzz available or up the price of product available legally as this will only undercut the capacity of the legally available product to complete with product trafficked by organized crime. 

In short, we need to think clearly about the public policy goals we can and should achieve & avoid confused attempts to somehow both legalize but suppress the marketing & consumption of Pot.