Rail transit systems involve more than just the actual railway. Sometimes entirely new systems other times expanding an existing system, properly showing a project to the public is essential in obtaining approvals. These systems can include buildings containing control rooms, security and repair facilities, crossings, bridges, tunnels, the actual vehicles and connectivity with other transport options.

Visualization techniques include using animations or digital photorealistic still images, watercolors and Virtual Reality using phone apps, Samsung viewer, HTC Vive or Oculus Googles.