RT @kreuzberged@twitter.com

Chaos in the streets of #Berlin due to #Blitzeis: perfect moment for the #OTD tweet.

#OTD 1902 on the crossing #UnterDenLinden & #Friedrischstrasse 1st #Berlin traffic wardens took up their posts: they used 1 long whistle then 2 short ones to signal change from Halt! to Go!

🐦🔗: https://twitter.com/kreuzberged/status/1604887909680775168