圣地亚哥在完成安全改进后恢复列车安静区，等待法兰克福机场审查。 San Diego reinstates train quiet zone after completing safety improvements, awaiting FRA review.
据新闻稿称，圣地亚哥市已完成所需的安全改进，以恢复市中心的火车安静区。 The city of San Diego has completed the required safety improvements to reinstate the train quiet zone in the city center, according to a press release. 联邦铁路管理局（FRA）暂停了安静区，导致圣地亚哥市中心十字路口附近的火车鸣笛。 The Federal Railroad Administration (FRA) had suspended the quiet zone, resulting in trains sounding their horns near the crossings in downtown San Diego. 法兰克福机场目前正在审查这些改进措施，并将决定是否批准它们。 The FRA is now reviewing the improvements and will decide whether to approve them.