Digital support for policemen on patrol

The everyday life of a patrolman

Patrolmen are on the streets every day and contribute a large part to traffic safety. In 2019, the number of traffic accidents on German roads was around 2.7 million*. In addition to the actions taken at the scene of the accident, bureaucratic activities are an essential part of their work.

*Statista,, 08.09.2020

The challenge

In every traffic accident, personal data of the people involved and the circumstances of the accident are documented. This forms the basis for further investigations of the case. Digital applications are already available for case processing, but these are only used partially or not at all and many patrolmen still use pen and paper. This complicates the daily work and increases the bureaucratic part.

→ Multiple efforts in documenting the accident situation

The hand-written forms and preparation of the sketch must be transferred to a digital form. This leads to double processing and therefore takes a lot of time.

→ Existing smartphones are not ideally suited for data collection at the accident site

Using the smartphone requires a high level of concentration because the display is not large enough. As a result, attention is not being paid to what is happening at the place of use. Furthermore, there is no possibility to create a digital sketch.


To address the two main problems, a concept was developed in which the focus was placed on the two core functions of data acquisition and the creation of a digital sketch. For the concept, a solution in shape of a tablet application was designed and validated by several user tests.

Simplified recording of personal data

To record the personal data, the identity card is being scanned. By scanning the ID card, the person involved is automatically registered and the scanned personal data is added. The person is then attributed a role and the process can be repeated or completed.

Preservation of evidence through a digital sketch

A sketch is created to capture the accident scene and to document it quickly. The GPS data of the accident site are used as a basis for mapping the course of the road at the accident location. A modular system is used to create the sketch. With this system, elements such as traffic signs, vehicles involved, etc. can be added to the drawing surface and also be edited.


One of our main goals was to give the plant owner a quick and simple access to important information. In order to that the we created a new information architecture and structured it in two hierarchies.

The landing page shows an overview of the most important information about the current values of the biogas plant. Beside the current data the diagrams give a preview of the development of different gas values.

There is a page for each fermenter wich shows more and detailed information about all values that are monitored. In addition to that the development of the different gas values in this fermenter are shown in a line chart.

One of the pain points was the missing information of methane values in correlation with the amount of biomas that was filled in. To solve this problem we added a page which shows the development of these values in the past. This gives the plant owner the opportunity to adjust the biomass to achieve optimal concentration of methane.


The project was created in the subject
„Experience Design 2“,
Summer semester 20 at the
HfG Schwäbisch Gmünd
under the direction of Prof. Jens Döring, Prof. Hans Krämer and Prof. Markus Weinberger.


Jonathan Bruckbauer
Ethan Günther
Marius Jakob