They have some form of cement which they put on the broken street. Then they mill they top of that street whilst adding water. The cement and the broken street get mixed doing that forming concrete in place. On top of this they can then put asphalt.
The german company was supported by the german development aid agency in making initial contacts. They then proceeded to start a pilot in lviev to prove the efficiency increases and (apparently) succeeded.
Tldr
They have some form of cement which they put on the broken street. Then they mill they top of that street whilst adding water. The cement and the broken street get mixed doing that forming concrete in place. On top of this they can then put asphalt.
The german company was supported by the german development aid agency in making initial contacts. They then proceeded to start a pilot in lviev to prove the efficiency increases and (apparently) succeeded.
Cool, this one may catch on elsewhere depending on how well the new base layer stands up to pressure over time.