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Airport Service Vehicle Pack "Functional Hack"

This is a pack of airport service vehicles which derive from busses. This idea came to me after seeing a youtube video of someone's airport in the game.
The idea is that you place actual roads (mostly concrete roads from the network extensions mod), and can setup "bus lines" for the service vehicles. Since the vehicles are not actually picking up passengers, you could have as few as 2 stops. Then use the Improved Public Transport mod to select only the service vehicles that you want to appear on the line.

All of the models are from my prop assets, so they share the same textures and mesh properties (additional quads were added for the wheels).
All of the vehicle assets have a passenger capacity of 1 (in the event the game has some failure condition for 0), as well as their speeds reduced to 5 (airport service vehicles drive slowly for safety reasons).

• BCart_Tractor - the baggage cart tow tractor with 4 trailing carts
  
• Catering_vehicle
  
• FuelTruck_Vehicle
  
• Empty_BusDepot - this is a bus depot asset with all of its stats set to zero, so that it can be placed on a closed road network. It does not generate trash, or consume resources. Additionally, the depot has no visible mesh associated with it.

1) Make sure you have the Improved Public Transport mod
2) Layout service roads for your airports (I recommend the concrete roads from the network extensions mod)
3) Place the empty bus depot (you can place it over another building, for example an asset with a garage door, to make its behavior seem more realistic).
4) Place bus stops where you want your rally points to be. Note that you can have multiple bus lines, and therefore multiple circuits for different vehicle types. The line must complete like a normal bus line.
5) Change the line color to white, otherwise the vehicles will have a line color tint to them.
6) Select the vehicle type you want to spawn in the line manager, and add the vehicle (for as many as you want on the line).
7) Enjoy the result of your airport have a little more life to it.

Network extensions Mod: http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=812125426
Network Skins (to remove lights on the service roads): http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=543722850