Research to Business
Offer: 659

Emergency brake assistant for vehicles and machines

Retrofittable emergency activation system ensures adjustable emergency braking while still allowing the driver to intervene during the braking process.

Emergency brake assistants increase road safety and are becoming increasingly important, especially in the area of autonomous driving. (Image: fanjianhua / Freepik)

In order to protect road users or machine operators, active safety elements such as emergency brake assistants are becoming increasingly important nowadays. Safety systems especially have a high priority for autonomous vehicles.

State of the art

Emergency brake assistants usually intervene by means of a preset and non-influenceable braking, often even maximum braking. Emergency braking is triggered either after a power failure or by a control unit that reacts to alarming data from cameras and radar sensors. Rapid braking, however, often leads to secondary accidents such as collisions or stopping at awkward locations, e.g. level crossings.


Scientists at KIT's Institute of Vehicle Systems Engineering (FAST) have developed an emergency activation system for adjustable full and partial load braking in which the braking force can be adapted to a given operating state until immediately before emergency braking. Furthermore, the driver can also intervene during emergency braking. The system consists of a hydraulic cylinder, a hydraulic pressure source and an adjustment actuator for the hydraulic cylinder with a sensor system. The hydraulic cylinder is located on the piston rod between the brake booster and the main brake cylinder. It only transmits an actuating force to the main brake cylinder axially via the piston rod when emergency braking is triggered. If the sensor system of the emergency activation system detects system failures, such as a power failure, the adjustment options are interrupted and emergency braking with preset characteristics is initiated.


The emergency activation system guarantees the initiation of emergency braking, whereby the driver can still intervene in the braking process regularly and primarily by using the service brake. This helps to prevent subsequent accidents and thus increase safety. In addition, the emergency braking system can be retrofitted in all vehicles or machines with an appropriate adaptation.

Options for companies

The institute has already tested a prototype of the emergency brake assistant for autonomous driving. KIT is looking for partners for further practical development or for the initialization of a cooperation project.

Your contact person for this offer

Birgit Schulze
Innovation Manager Mobility and Information
Karlsruhe Institute of Technology (KIT)
Innovation and Relations Management (IRM)
Phone: +49 721 608-28460
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