所安装的设备会通过发出声音来帮助盲人或视力障碍者过马路。
原网页:https://eclife.ca/zh/news/1616075021-wuzhangaixingrenxinhaodengjijiangdaolai-13810
信息来源:https://www.halifaxtoday.ca/local-news/accessible-pedestrian-signal-updates-are-coming-3552975
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