Sen. Rick Jones and Rep. Andy Schor said in a statement that the bills they introduced would mirror the state's ban on billboard advertising for tobacco.
The legislators cite Centers for Disease Control research that notes tobacco advertising can increase usage by minors. Jones and Schor say they want to limit youth exposure to medical marijuana.
"We don't need massive marijuana billboards advertising the availability of medical marijuana or to find shops, and shouldn't be advertising this to our children and others who may abuse it," said Schor.
The state does not have a billboard advertising ban on alcohol, which also has an age limit.