Railway signal in Germany, around the 1920s
The so-called optical train protection tested back then, to increase traffic safety (undated picture). Date created: 01.01.1920-31.12.1929
Picture No
11086546
Media ID
48223755
Size
3172px x 4963px
(4.4MB)
Credit
© Mary Evans / Sueddeutsche Zeitung Photo
Usage Restrictions
No MR, no PR, no manipulation. No commercial, merchandising or advertising use without release by SZ Photo
Source
SZ Photo/Scherl
Date
1920
