T0478 Drafting of a new noise calculation method

The objective for this piece of work is to establish a comprehensive dataset of vehicle noise emission sources, and implementation of this data for use within the update to the existing road noise calculation method: Calculation of Road Traffic Noise (CRTN). The new and updated calculation methodology will be called: Calculation of Sound Levels Outdoors (CSLO), and will be split up into four parts: - Part 1: Terms and definitions - Part 2: Sound Propagation model - Part 3: Rail source terms - Part 4: Road source te...