Glycemic Excursions in Patients With Type 1 Diabetes Mellitus Using Closed-loop Systems

This study examines whether people with type 1 diabetes who use a closed-loop insulin pump system (a device that automatically adjusts insulin based on continuous glucose readings) have safer blood sugar levels while driving compared to those using traditional multiple daily injections and a glucose monitor. **You may be eligible if...** - You have type 1 diabetes for at least 3 years - You are 18 or older - You drive regularly (but not professionally) - Study group: You use a MiniMed 780G closed-loop pump in closed-loop mode for at least 6 months - Control group: You use multiple daily injections plus a continuous glucose monitor for at least 6 months **You may NOT be eligible if...** - You are a professional driver - You are pregnant - You are unable to attend study appointments Talk to your doctor to see if this trial is right for you.