The Differences from Traditional Garage Doors...
For any traditional one piece up & over garage door over 8 feet wide, there are two horizontal tracks running into the garage that are the same length as the door height.
For any sectional type door, there are again two horizontal tracks, often double the size, coming into the garage, usually 400-600mm longer than the door height. Round the corner doors require a full length tracking system coming into the garage.
Plus, if these doors are electrically operated, they would also require a long track system for the electric operator, so effectively a third track right down the middle or to the side would also be installed.