Individuals assigned to the DD.com and DD.com+MI groups will complete 6 Cores, or classes over the internet, focusing on risk factors and prevention, detection, and management of hypoglycemia before and while driving. Each core will take approximately 30 minutes to complete. Core 0 is a tutorial on how to use the internet program. Core 1 focuses on how to use the Tool Kit; Core 2 focuses on how to be a safer driver in general; Core 3 focuses on how to prevent hypoglycemia from occurring while driving; Core 4 focuses on detecting and treating hypoglycemia during a drive; Core 5 focuses on how to maintain the improvements they have achieved in the previous Core over the next 12 months.