For Transport Fever 3 construction preview before committing a road or railway, return to the main menu, open advanced settings, enable Drag and Confirm Construction mode, then reload your save. This restores the classic drag-and-confirm approach for planning roads, rail lines before building.
How Do You Enable Preview Before Building?
Return to the main menu
Leave the loaded game to change the construction mode.
Open advanced settings
Enable Drag and Confirm Construction mode before loading your save.
Reload your save
Use the classic drag-and-confirm approach to plan your road or rail construction before confirming it.
If the setting is greyed out while playing, return to the main menu. Enable it there, then reload the save; changing it requires setting the option before loading.
Which Construction Mode Should You Choose?
Drag and Confirm — Recommended for Planning
Choose this mode when you want to review a road or railway before committing construction. The classic approach remains available in Transport Fever 3.
Continuous Build — For Extending Roads and Tracks
With your desired road or rail type selected, the first click starts the road or track and the second click builds it. This mode also provides live previews, but the second click commits construction rather than leaving a separate confirmation stage.
What Can You Adjust Before Construction?
Construction settings support dynamic adjustment of height and slope. These are confirmed parameters for shaping your network.
The specific buttons for changing bridge or tunnel types and adjusting tunnel entrances are not confirmed yet. Enabling classic construction mode is confirmed; detailed bridge and tunnel editing steps are not confirmed yet.
For related planning questions, see connecting distant industries, moving stations and buildings, train route problems, and setting starting money.