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Light-emitting platform

If you are really right, you see when the light is on!

On February 26, 2018, the innovative solution for passenger guidance in Stuttgart-Bad Cannstatt station had its German premiere. When passengers wait for the S-Bahn lines 1, 2 and 3 at platform 2 in Stuttgart-Bad Cannstatt, they will see colorful lights flashing. Illuminated symbols indicate where the train stops shortly before the next train enters the station. The door positions can be displayed. Passengers are thus always in the right place at the platform, boarding is faster and the S-Bahn can leave on time.

In a  pilot operation Deutsche Bahn tests the nation's first dynamic route guidance system with light strips at the S-Bahn Stuttgart. The innovative solution is based on optic fiber concrete developed by the Berlin startup SIUT.

The platform on track 2 in Bad Cannstatt is fitted with light fiber concrete behind the security strip at a distance of about 200 meters, one meter from the edge of the platform.

• The maintenance-free light strip consists of 670, eight centimeter thick and 30x30 centimeter wide light fiber concrete slabs.

• Fiber optic concrete contains 15 different components. These enable the light fiber systems to connect to the concrete without loss of quality.

• The slab surfaces are sealed so that they are protected from penetrating water, dirt and damage.


 Below each fiber optic slab is a small computer that can send and receive digital signals.

• The electronic is composed of a control board and a LED board, three times equipped with the colors red, green and blue, which can be interconnected to different mixed colors.

• Each individual fiber optic concrete slab can be individually controlled.

• Train type and train length are transmitted iin real-time to the optical fiber concrete slabs to display the train length and door positions.

• Symbols can be displayed, static or pulsating in the colors white, yellow, red and green.
• The holding position of the trains is indicated by a static yellow double line. Outside the holding position guide white pulsating arrows towards it.
• The door positions are marked by a static white double line.

High volumes of traffic can lead to delays in the processing of trains.
• Passengers do often concentrate at the platform entrances. This can lead to a delayed entry at busy doors.
• Passengers are often not at the right place on the platform where the train stops.
• Longer entry times can affect punctuality.

Door positions differ depending on the type of train and are indicated using a white double dotted line.

Easier to find place

In addition, the innovative passenger steering system using fiber optic concrete should also display the load of incoming trains in real time. The capacity display is based on a load measurement of the English start-up OpenCapacity. Video footage from some test trains is used to identify occupancy patterns. The information about passenger numbers in each car is forwarded to the platforms, where a traffic light system provides travelers with visual guidance.

The English startup OpenCapacity develops for DB hardware and software, which determines the utilization of the wagons in real time based on data of the video surveillance in the trains. The British founders participated in 2016 in the network event "meet @ mindbox" of Deutsche Bahn.
• An additional on-board computer is connected to the video surveillance system in the S-Bahn trains.
• The computer records and determines an assignment pattern in real time using learned algorithms.
• This is used to calculate the occupancy rate, which is transmitted to the platform edge, which uses red, yellow and green illuminated double-lines to show in real-time how busy the wagons are.
• Passengers can easier find free places

Showcased for the first time at this year's CEBIT trade fair, the new generation of light-emitting slabs uses solid instead of dotted lines to enhance the clarity of the LED symbols.

2018 German Mobility Prize for SIUT and S-Bahn Stuttgart

The light-emitting platform is one of the winners of this year's German Mobility Prize. The "Germany – Land of ideas" initiative and Federal Ministry of Transport and Digital Infrastructure awarded the prize to ten outstanding and innovative projects that take mobility's digital transformation to the next level.