Vehicle dampers are fundamental components in vehicle engineering and are of great importance for ride comfort, handling and safety. Proper flow control within these dampers is vital to optimize vehicle performance and passenger comfort. Transparent damper models consisting of light transmitting materials facilitate direct visualisation of flow patterns of fluid. This is crucial for understanding how these systems work, under different conditions. The dye injection technique is based on the injection of coloured or fluorescent dyes in the damping fluid. When combined with high speed photography, this technology allows for detailed recording of transient events during compression and rebound cycles. Real-time response of the damper is captured through high-speed cameras that record the rapid changes in fluid dynamics, providing crucial data. The flow speed and turbulence inside the damper are determined and characterized by particle-tracking techniques.