| Main Title |
Tri-Met Quiet Transit Bus Project: A Case Study. |
| Author |
Greenstone, Reynold ;
Benson, William ;
|
| CORP Author |
ORI, Inc., Silver Spring, MD.;Environmental Protection Agency, Washington, DC. Office of Noise Abatement and Control. |
| Year Published |
1980 |
| Report Number |
ORI/TR-1849; EPA-68-91-5040; |
| Stock Number |
PB81-188021 |
| Additional Subjects |
Urban transportation ;
Transportation noise ;
Buses(Vehicles) ;
Noise pollution ;
Noise reduction ;
Modification kits ;
Economic assistance ;
Technology innovation ;
Urban planning ;
Urban development ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB81-188021 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
122p |
| Abstract |
This report details the cooperative activities of a number of agencies at the Federal, State and local levels both to improve downtown transit-bus service and to reduce the noise associated with that service. Starting from a baseline of 80 dBA a reduction of about 4 dBA has been achieved, and the reduction involved only the use of 'operationally acceptable' noise treatments. Additional quieting seems attainable with application of advanced technology concepts. 'Operationally acceptable' in the context of this study means noise treatments that the management of Tri-Met accepted as not having a detrimental effect on maintenance. For those Portland buses that had 80 dBA noise levels initially, the operationally acceptable noise treatment will give a reduced noise level of 76 dBA. |
