<p>Vibration and noise in urban environments have a significant effect on the quality of life and comfort of their residents. Among the various sources of these vibrations, those caused by railways have become a growing concern, particularly with the rise of high-speed trains. In recent years, researchers have increasingly focused on finding ways to mitigate the vibrations generated by railways, reflecting the importance of this issue over the past decade. In this study, four different vibration mitigation techniques were compared: soil stiffening beneath the track, stiffened soil barriers, concrete barriers, and geofoam barriers. The analysis was conducted using Plaxis 3D software, considering both homogeneous and layered ground conditions. Additionally, the nonlinear behavior of soil was modeled using the Hardening Soil Small-Strain model. The study focused on simulating quasi-static excitations due to a single axle load. The results indicated that soil stiffening beneath the track was the most effective technique. For rigid wave barriers, an increase in barrier stiffness led to higher insertion loss values. Geofoam barriers were found to be the least effective. All mitigation measures showed similar insertion loss values at varying distances from the track, and increasing barrier depth consistently resulted in higher insertion loss. Insertion loss also varied with rising load velocity. When considering soil nonlinearity, vibration levels were lower than those predicted by the linear elastic model, for load velocities greater than the critical velocity. Ground layering had a marginal effect on mitigation efficiency, with similar insertion loss values observed for both homogeneous and layered ground.</p>