Youth category for ticket prices or specific age categories on tickets

Ticket prices for vbarious things in the county are usually labelled as eitrher 'children' or adult' and at 16 or 17 years old, it is not obvious which one I would come under. It would be useful to have either a separate bracket outlining the age categories or potentially a youth/young person category price.  

This is important as it would help people my age feel a bit more welcomed and help with clarity on where young people fall within the prices for the business.