dense fog cloaks rail tracks, saturating air with humidity in winter. red signals glows in snow - 鐵路訊號 個照片及圖片檔深色的, 紅綠燈
train black symbol on rectangular red and white sign on pole at railway crossing against blue sky. - 鐵路訊號 個照片及圖片檔危險
Office workers on crowded commuter train of Western Railway near Mahalaxmi Station on the Mumbai Suburban Railway, India社區, 孟買, 印度人
railroad traffic light with red signal in fog at night. two semaphore glowing red light on railway - 鐵路訊號 個照片及圖片檔
