Traffic calming measures combat speeding and other unsafe behavior by drivers, proving their effectiveness in reducing the frequency and severity of accidents. However, some measures include road results that cause a negative impact on the environment. The objective of this work is to analyze the repercussion of reducing the speed of a vehicle on exhaust emissions and fuel consumption (FC) when driving over a bump. To do this, this article presents a procedure based on two methods applied to RDVs. The first is based on an application that measures the physical impact on a vehicle from acceleration data taken with the IMU of a smartphone in a direction perpendicular to the chassis. The second is aimed at inferring the increase in emissions and FC by taking the speed-time profile of a path because of decelerating, approaching and moving away from the bump. The experimentation carried out with a standard two-passenger vehicle circulating on a section of road with RDV with a trapezoidal section and with a circular section in front of the same section without RDV found a significant physical impact in both scenarios, resulting in an increase in CO emissions, HC, NOX, CO2 and FC associated with speed decreases of only 20 km/h and 10 km/h, respectively. This demonstrates the generalization and usefulness of the proposed method for the study of the increase in emissions and fuel consumption of different «traffic calming» measures on the road. Keywords: Fuel Consumption, Pollutant Emissions, Impact, Speed Reducer, Acceleration