There is an increased need for cybersecurity professionals with specialized knowledge in line with the regulatory requirements of R156 and R155 issued by the United Nations Economic Commission for Europe (UNECE), given the growing cyber threats in cyber-physical systems, especially in the automotive industry. The development of testbeds that can simulate a vehicle's control system, sensors, and actuators is essential for addressing this requirement. This study introduces the first REference Automotive ArChitecture Testbed (REAACT) prototype, which is intended to carry out this essential function. The REAACT testbed explores the reliability of software-based steering and braking systems inside the vehicle. By doing so, we want to gather important facts about the impact of these advanced software control methods have on the dependability and safety of cars. Using an open-source 3D automobile racing simulator, we construct a network of connected components that each perform control strategies like traction control and braking aid. This simulator contains an integrated virtual machine that enables task tracking and updating while additionally allowing inputs from the keyboard. Furthermore, we adjust control parameters using data analysis to enhance the performance and safety of the systems. © 2024, Politechnica University of Bucharest. All rights reserved.