A combined cases simulation of environmental impacts vehicle traffic noise and exhaust

摘要

The prediction, assessment, and control of the environmental impacts of an ordinary motor traffic road are generally focused on a single factor, such as traffic noise only, or vehicle exhaust separately. In contrast to the usual researches, we use two case motor traffic roads information from the same terrain maps, as inputs to proprietary software, to predict vehicle noise and exhaust. A combined simulation is conducted for the environmental impacts of (1) traffic noise, using the Cadna A software, combined with (2) vehicle exhaust, using Cadna A-APL. The results are used in at least three applications to find the dominant impacts between noise and the air pollution. Firstly, the quantified findings can be used for overall management of the environmental impact of motor road traffic. Secondly, while an accurate site measurement of the vehicle exhaust is difficult due to the influences of meteorological conditions, a simulation has fewer such limitations. Thirdly, the influences of sound barriers and buildings with sound-insulating function on the exhaust diffusions can also be illustrated with Cadna-APL; sometimes, they are important to prioritize the impact control policy between motor traffic road noise and exhaust.