The first thing I noticed when I arrived in Berlin was that the barriers of the work in progress are only of two types and very similar to each other. White with the “classic” red and white reflective stripe. The first two differences that came to my mind comparing the barriers of London and Berlin were:
1 in London there are many different forms of barriers (both in function and in aesthetics and production technique)
2 the colors of the signage in London are many (blue, green, red, orange) while in Berlin they are all white and often with an orange light on top.

As for the shape I thought that the municipality is supplied by a single manufacturer that has only two different but very similar molds to produce. Probably one is the development of the other.

For the color instead I thought it might be because of the low light they have in the streets at night and then white is the most visible color.
Another reason that comes to mind is that Berlin, as dark as it is, is also famous for the amount of graffiti on its streets (beautiful and many) that give color to a gray city, so white becomes a break from the colors of the walls.
The element that we always find, however, is the adhesive strip reflective white and red.

The element that we always find, however, is the adhesive strip reflective white and red.
However, this is different from London because the strips are vertical and not oblique and are also thicker.

I like this form of barriers very much, but between the two I prefer the one with the holes in oblique (photo above). Maybe because the shape seems more dynamic to me.
Moreover white gives more importance to the object, is more neutral than all other colors and is a symbol of purity.

I can think of how barriers are in Milan but I can’t think of what forms there are. (research to do). I started to appreciate these objects in Rio de Janeiro because I really liked the shapes and colors used but in the other cities where I have been I never paid attention to them until I arrived here in London where they are back to interest me.

Maybe in Milan they are all of different shapes and therefore none in particular attracts my attention?
Maybe just because they are ugly. I only remember the concrete and metal ones, but I don’t remember any shape for the empty plastic ones inside.

While I was going around Berlin I found myself in a big shop of tools and utensils for every kind of thing and I looked for some things that I need for the project, chesseborough clamps, but I didn’t find them. But I found this corner that immediately attracted me, red and white striped everywhere.
An international language for “work in progress” is all that exists. Everywhere these colors are used to define something unfinished. Temporary. Even the shape of the lights in the photo has a shape that shows us the way, it looks like the glass of the light in the cars.
But this is not white red but yellow, the only one different.
When do we have red and white lights? Do they exist for any meaning? Blue lights and red lights are definitely used intermittently.