Wir begrüßen euch in der Fan-Community zu den Spielen Transport Fever und Train Fever, den Wirtschaftssimulatoren von Urban Games. Die Community steht euch kostenlos zur Verfügung damit ihr euch über das Spiel austauschen und informieren könnt. Wir pflegen hier einen freundlichen und sachlichen Umgang untereinander und unser Team steht euch in allen Fragen gerne beiseite.
Die Registrierung und Nutzung ist selbstverständlich kostenlos.
Wir wünschen euch viel Spaß und hoffen auf rege Beteiligung.
Das Team der Transport-Fever Community
1. The side of the maps are 1024 x X + 1 (1025 x 2049 , 3173 x 4097 etc.)
2. The max mapsize are limited to 16 mio Pixels
For more information look here: Heigtmaps (Erlaube Abmessungen) (Only german but that should not the problem) 
Maps larger then 256 km² only possible with ingame generated maps.
Max. 576 km² with experrimental mapsizes.
See here: Alle Kartengrößen
i think there'll be future updates/patches concerning this problem
I was immensely disappointed too when I discovered that they limited to 16 mpx the maximum side of user created maps.
I believe that they did it to prevent bad game performances in ultralarge maps. But the game already has a performance drop when the map populates too much, asides from the map dimensions. It has more to do with the number of agents and vehicles, so limiting the map dimension is pointless.
Another things that bothers me, as an enthusiast map builder, is that the game try always to automatically create a road network in you map, with ugly results (island towns ends up always with long oceanic bridges to the mainland) and even preventing you to use a map if the game fails to create the automatic roads network. Without a proper editor, in mountainous maps it is really a pain to add cities and industries because the game won't accept cities or industries that can't be reached by normal roads and doesn't try to build tunnels in mountains.
I really hope that the Devs will get us rid of these pointless and frustrating limits to our creativity.
How can edit city? Not palce. I want later place city building, street, etc.
go to drive C: and search for settings.lua file (for GOG game located here: C:\Users\$UserName\AppData\Roaming\Transport Fever)
find experimentalMapSizes parameter and change it to true
That's it. Enjoy Huge and Megalomaniac sizes.
