In this project we evaluated the perception of speedin a driving simulator. The study provides a preliminary survey that focuses onhow human beings can perceive moving in space. We have developed and implemented some techniques to study how we modify the perception of speed in adriving simulator. We targeted the driving perspective, trying to create certain effects in order to affect the perceived sense of speed. Changing the contrast of the scene we studied how the perception of the speed has been modified. Testing this modification we saw a change in the perception of the speed by the driver, who noticed an increase of the perceived speed through the alteration of the contrast of the scene.