Integrated Optimization in Public Transportation

What is LinTim?

LinTim is a scientific software toolbox that has been under development since 2007, giving the possibility to solve the various planning steps in public transportation. Although the name originally derives from "Lineplanning and Timetabling", the available functions have grown far beyond this scope. The project was launched by Anita Schöbel in 2007 at the University of Göttingen, moved to TU Kaiserslautern in 2019 and was passed on to Philine Schiewe in 2022.

What is LinTim able to?

Currently implemented are algorithms for line planning, timetabling, delay management and rolling stock circulation, amongst others. The integration into a common environment makes it possible to analyze the mutual influence of the planning steps and to illustrate it graphically. Thus solution properties can be found that would have been invisible to classical approaches. The gained results can be used to e.g. plan already the lines so to get a good timetable, or to plan timetables that are robust against delays.

Try it out

LinTim is an open source software, it is therefore possible to try it out yourself. Please check the download page for more information and feel free to follow our mailing list for all announcements.

How does LinTim work?

The modular structure allows alternative optimization algorithms and further planning steps to be easily added. Data formats that are kept simple and easy are used as interfaces, making it possible to use whatever programming language of choice - e.g, C++, Java or Shell scripts. Especially students have an easy possibility to test developed algorithms using the capabilities of LinTim.

What is the meaning of the logo?

The logo was designed and realized by Daniel Scholz. It emblematizes the connection of planning steps in public transportation - here, by a transfer station between two lines of a network.
A larger version can be downloaded here.

LinTim goes China

Part of the LinTim-team was invited to hold the "Golden School: Public Transport Optimization" in Beijing. During the course Anita Schöbel, Julius Pätzold and Alexander Schiewe could give the attending bachelor, master and PhD students an understanding of the theoretical aspects in public transport planning as well as of the practical work with examples in LinTim. In the end, the students presented a small project they worked on in groups.

LinTim moves to Aalto

On September 20, 2022, we had a very successful workshop celebrating the 15th anniversary of LinTim. With presentation from both practice and the research community, we could show how well LinTim has developed during the last 15 years and where it still has opportunity to evolve. Thank you all for attending the anniversary workshop and contributing to the development of LinTim!

At this occasion, the baton of the LinTim-head has passed from Anita Schöbel to Philine Schiewe who will continue developing LinTim at Aalto University in Espoo, Finland. We will keep you informed about the technical changes that will result from this move. Nevertheless, Kaiserslautern will remain an important LinTim-contributor both through TU Kaiserslautern and Fraunhofer ITWM.

We are looking forward to at least 15 further successful LinTim-years!