For improving Taoyuan County's environmental quality, the "Best Environment Co. Ltd." provides the service of noise monitoring and improvement suggestion, executes periodical noise-site monitoring and update related information. The Project executes by EPA's "Noise Control Act Enforcement Rules" and "Environmental Sound Level Standards", the noise monitoring method by EAL's "Environmental Noise Measurement method". This project executes from 6/10/2007 to 6/9/2006, achieves 24 hours continuous monitoring of 142 noise-sites, achieving rate is 100 %. The result analysis shows the unqualified rate of environmental noise monitoring points is 18.8 %, behind the intermediate target of "National Environmental Protection Project", and the unqualified rate of traffic noise monitoring points is higher than neighboring county, the major cause is that the Da-An elementary school, traffic noise monitoring point located by the side of main road and the traffic is heavy. The petitions during the project executive period gets more than before, so need to pay more attention to the noise nuisance and the follow-up. One suggestion is that the major authority may make a study of land use, noise control zone's classification principles, vehicle noise control, educate and public awareness, traffic control plan etc. And some important traffic infrastructures finish continually, the connected road system's environment varies, so advises the traffic authority takes notice of the transportation variation and the road service level, then discusses the current highway system plan affords noise control zone's classification principles.

environmental noise, traffic niuse, monitoring