Geography Question - Random Category#4?

Geography Question - Random Category#4?

Here is the next in a new series of Geography questions... with a different category each day.

Monday - Bodies of Water
Tuesday - Buildings and Structures
Wednesday - Mountains
Thursday - Where Did It Happen?
Friday - Bridges
Saturday & Sunday - Random category

Today's category is Where Did It Happen?

Your challenge is to identify in what country the first one of these (in picture) was installed. Bonus if you can identify the city, town or village and the location within it.

Not the first one!
Not the first one!

Here are some clues...
* It was in a city that is its nation's capital
* It was near a government building
* It was installed in 1868
* It was manually operated by police officers
* It was non-electric and gas-operated

Put your answer in an opinion below.

The correct answer will be given in a few days (Tuesday).

Good luck!

Updates
+1 y
The correct answer will be given on Saturday. You don't have to wait until next Tuesday. Sorry for the typo.
Updates
+1 y
Sorry G@Gers... I really botched this one... wrong headline question and picture. The question is "Where did it Happen?"

In any case, the correct answer is LONDON ENGLAND, and the traffic light was just outside the Houses of Parliament in Westminster.
Geography Question - Random Category#4?
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