Update June 9, 2014: Please find answers to questions asked here.
The following video gives an overview about the game world and demonstrates railroad track construction. As always, please note that graphics and the user interface are not final.
The first part of the video shows a typical (large) random map. Such a map is generated each time the player starts a new game. Maps can be up to 256 square kilometers large and have a horizontal resolution of 1 meter. Towns, industries, hills, rivers, lakes, forest etc. spread across the map.
The second part of the video is about track construction, probably the most important task of the player. The video demonstrates the simple yet powerful construction interface. Bridges, tunnels, level crossings, switches, parallel tracks etc. can all be built by simply dragging and releasing the mouse. Finally, the video shows two Swiss Re 450 train compositions running on the tracks just built.
Signals are not shown in the video but will be demonstrated soon. Train Fever will support path signals which you may know from the OpenTTD project.
More information on railroad tracks can be found in this previous update.
Finally, an update for those of you interested in the (closed) beta test: It’s currently scheduled for end of June and more information on this will be announced on this website.