In the AES Laboratory research is conducted on active seat belt control. This is, manipulating the behavior of a seatbelt in such a way that the forces on the torso of the driver and passengers of an automobile are minimized. The use of seatbelts in cars greatly decreases the chance on severe injuries in a car crash. However, this can be further improved as stated by E.P. van der Laan in his PhD study (2009). In contemporary automobiles the seat belt is not actively controlled, it simply fastens if a certain deceleration is detected. Van der Laan proposed a Continuous Restraint Control (CRC) system that uses real time calculations to reduce the forces acting on the torso. To accomplish this, a semi-active hydraulic actuator was designed and installed on an experimental setup. This experimental setup consists of a crash sled, with an independently moving torso mass that is restrained by a seatbelt controlled by the semi-active hydraulic actuator. The experimental setup is able to simulate an actual car crash, and using the sensors it is equipped with the performance of the seat belt control can be studied. Momentarily, the signal transmission from computer to the actuator is being examined and improved so eventually the proposed real time control can be implemented.