A garage that holds a workshop, bikes, motorcycles or yard equipment may see ten pedestrian trips for every vehicle movement. Opening one hinged leaf is simpler than lifting an entire sectional door each time. There are no ceiling tracks, torsion springs or hanging sections above the workspace.
The passive leaf stays bolted while the active side works as the everyday entrance. Release both leaves when a vehicle, machine or large project needs the full width. A 30/70 split can give the daily leaf more room than an even 50/50 set.
Do not buy it only for the carriage-door look. If the driveway is short, steep, drift-prone or usually occupied by a parked vehicle, the swing may become a daily nuisance. In that case, a sectional or side-sliding system is the better tool.