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Keeping the Noise Down: Highway Traffic Noise Barriers.
| 题名： | Keeping the Noise Down: Highway Traffic Noise Barriers. |
| 关键词： | barrier；noise；iers；traffic；ping；down；high；appeal；vista；reduce |
| 摘要： | Highway traffic noise barriers can reduce the loudness of traffic noise by as much as half; do not completely block all traffic noise; can be effective, regardless of the material used; must be tall and long with no openings; are most effective within 61 meters (200 feet) of a highway (usually the first row of homes); must be designed to be visually appealing; must be designed to preserve aesthetic values and scenic vistas; do not increase noise levels perceptibly on the opposite side of a highway; and substantially reduce noise levels for people living next to highways. |
| 报告类型： | 科技报告 |
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