Pay attention to the signals ahead, absolutely guarantee the safety of moving trains

注意前方信号确保行车安全
Zhuyi qianfang xinhao quebao xingche anquan
Pay attention to the signals ahead, absolutely guarantee the safety of moving trains
early 1980s
Education and Propaganda Department of the Trade Union of the Guangzhou Railway Office (广州铁路局工会宣教部)
78x53 cm.
BG E15/948