http://www.thenational.ae/uae/abu-dhabi-roadside-sensors-to-detect-cars-that-make-too-much-noise
ABU DHABI // New roadside sensors will be installed in residential areas of the capital to detect cars that make too much noise. The system consists of a sound meter linked to a sophisticated camera. If the noise level from a vehicle is excessive, the camera captures the licence plate and the driver may be fined.