This paper presents an experimental study conducted in the TASL1-M boundary layer wind tunnel (BLWT) at the Constantin Iamandi Aerodynamics and Wind Engineering Laboratory (LAIV) of the Technical University of Civil Engineering Bucharest (UTCB), Romania. The experimental campaign was conducted to determine the longitudinal velocity distributions along a vertical line placed in the median longitudinal plane of the experimental section. The measurements were performed using a Constant Temperature Anemometer (CTA). The main objective is to simulate wind speed distribution, turbulence intensity, and power spectral density at scale and to match the parameters found in wind codes. The paper describes the experimental setup, including the wind tunnel specifications, the variable roughness system, turbulence generators, and measurement equipment. Two sets of measurements were conducted for different roughness heights. The results obtained for a zero-roughness height and no turbulence generators were compared to theoretical predictions given by the law of the wall. The other results were compared with the Eurocode standard, with non-dimensional longitudinal velocity distributions and turbulence intensity profiles expressed as a function of non-dimensional height. For each exposure factor, defined here as the representation of upstream roughness and flow characteristics in the wind tunnel, the turbulence structure of the simulated wind was emphasized by comparing the power spectral density with the code specifications. The results show good agreement between measured profiles and code specifications, confirming the system’s ability to quickly generate realistic boundary layers for various exposure factors.