I searched the forums the best I could, but did not find another post similar to this, which I find surprising.
I also did not see a “Light” object when I paused the gameplay video and went through all the objects, zones, infrastructure, etc.
The idea is to be able to put street lighting on the access road up to the drop-off points to light the exterior of the airport, also to be able to light service roads, etc (not just the stands)
Well maybe not on all roads but at least so that you can place them where you like. Unfortunately lights in Unity is extremely performance costly which means that lights on all roads will cause fps drop.