Speed Limits in Germany are generally valid until End of Town or the next (major) intersection (not every road intersecting with the lane you're on counts as such, the sidewalk has to be interrupted). There are exceptions; Speed Limit Zones (Zones, not simple Limits, usually 30KPH) do not end at intersections and there are special Walking Speed Zones (Beruhigte Zone, usually around Schools or dense Community Areas) where the max speed is 10kph where you get much more severe fines than in other zones (especially around schools).