Well the core concept requires judges to travel to different locations.
I'm a judge in the Circuit court. Oh, cool! I know circuit courts are part of common law systems. How do you like being a judge? Honestly, it's a bit intimidating. I woefully underqualified. I'm a bit embarrassed to ask, but what does a circuit court do?
The core concept of circuit courts requires judges to travel to different locales to ensure wide visibility and understanding of cases in a region.