Resumen
Traffic calming and speed reduction are one of the core factors that influences traffic accident rate and severity. In the last decades a lot of speed calming measures were implemented in the Lithuanian roads of national significance and city streets. As it was foreseen the result was very effective. The paper presents research methodology and analysis of results of vertical traffic calming measures (speed bumps, speed humps, raised crosswalks), safety islands and speed cameras influence to the road safety on Lithuanian roads.