The libraries listed in the tables below are suitable for the current program version and are usually already included in the setup program package (sometimes with a delay for newly developed libraries). This means you usually do not need to manually install any libraries. Railroad-Professional can also read libraries of older formats. They are converted into the new format. If you need a accessory library that is not (yet) available in the new format, you may try one of the old libraries.

Of course, all libraries for Railroad-Professional are free of charge. After downloading a library, unzip the ZIP file into the "Bibliotheken"-directory (german word for 'libraries') that Railroad-Professional created on your computer during setup (and installed the libraries already supplied). The corresponding subpath is then created automatically. As of version 2.4, the supplied files are located under the public user and there under 'documents'.

Example:
Unpack the library of the signals of Märklin, scale H0, to "C:\users\public\documents\Railroad-Professional X.Y\Bibliotheken", where X.Y denotes the program version. Then you will find the subdirectories "Zubehör\H0\Märklin" ('Zubehör' is the german word for 'accessories') in which the file H0Macc_xxx.rpd will be located. Versions with the same name are overwritten!

If you have created your own libraries in Railroad-Professional and would like to make them available to the general public, please .

Annotation:
The brand '_Universal_' listed in the following tables is not a true brand. Instead, these libraries contain generally usable symbols for the relevant scale.