As cities grow bigger, traffic noise gets worse. In order to help in the determination of noisy areas, the LACEAC prepared a measurement protocol to aid in this task. This protocol is the base for a recommendation to the cities’ governments. To put together this protocol, the LACEAC has analyzed different legislation together with measurements taken in several pilot areas of the city of Buenos Aires and determined the best approach based on the cultural habits of the city inhabitants. This protocol thus recommends the way that measurement locations should be determined, exposure time, the way to take the measurements, to study the results and to draw the noise maps.