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SPEAK UP
| 题名： | SPEAK UP |
| 其他题名： | Quiet vehicles, including battery-powered ones, are often too quiet to be noticed by pedestrians, particularly distracted ones. That means they pose a risk in urban environments; but a solution is on the way, reports Will Dalrymple |
| 正文语种： | 英文 |
| 作者： | Will Dalrymple |
| 关键词： | NULL |
| 摘要： | SPEAK UP |
| 出版年： | 2019 |
| 期刊名称： | Transport Engineer |
| 期： | 8 |
| 页码： | 31 |
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