You need the payware Addon "Hamburg Tag und Nacht".
It has be active.
Have you bought the addon via steam?
When not, you need to activate it in the Aerosoft Launcher.
So you got it as a present from other? Or how do I have to understand it?
Beside from that, you have installed it by yourself. So, have you done that via steam or from an exe-file?
i had reinstall the addon and the map.
the traffic lights are no longer invisible but there is texature problems now 
Did you also activate (install) the Hamburg addons via Steam? Since the traffic lights and cars come from this add-on, it should actually work.
Otherwise the addons could be cracked, which is why they do not work properly. A friend of mine had the same problem and allegedly cracked the addon.
