Feature request title:
Tunnels for road traffic, both normal and service, to allow passing underneath runways, foundations etc.
Why it should be implemented:
Road tunnels are a common feature found around most airports I’ve visited. It allows for a more free flowing of traffic around the airport from one side to another without having to go the LONG way around.
Images, references or additional content:
Example of a normal road tunnel.
Example of a service road tunnel.