Smart Colorado, an advocacy group seeking to protect children from marijuana, has sent more than 2,300 letters to localities and chambers of commerce in the state urging their jurisdictions to opt out of social consumption of marijuana.

House Bill 1230 in last year’s legislative session authorized “hospitality” establishments in which patrons could consume marijuana or purchase and consume marijuana. Both the state and localities must approve a business’s license before it can operate.

Smart Colorado in its letter raised fears of pervasive cannabis lounges in multiple types of businesses. It worried that social consumption would “further normalize marijuana use.” The group also included statistics of Colorado traffic fatalities in which the driver tested positive for marijuana and other substances. Smart Colorado’s analysis showed that fatalities doubled between 2013 and 2017 for drivers who only tested positive for cannabis. However, the majority of drivers involved also tested positive for alcohol or some other drug in addition to marijuana.

Westword reported that Denver and Colorado Springs already have authorized such establishments. While Denver had an ordinance that predated the state law and enabled one business to open, the city will evaluate its policy and decide what, if anything, to modify in light of broader state rules.