In Germany, the red-yellow phase is only one second long, for many traffic signal lights. Some use a two-second phase, but not many, even in St. Pauli's Reeperbahn. Some signals have backplates with a white stripe, similar to most of those in Switzerland, but others mainly don't.
Photos of Landungsbrücke/Stintfang, Alster, and Reeperbahn in the St. Pauli district.

Horner Rennbahn (Hamburg Ost)

More signal photos to come soon.