Meaning per category - K
These signs are all about directions. They indicate which way to go for the place or district you want to go, but also which way to go when you are a commercial driver transporting hazardous substances.
K-1 - Low level motorway information sign
K-2 - Advance warning sign for an exit on a motorway
K-3 - Information sign alongside the motorway indicating an exit to a service area with name and symbols for the services offered
K-4 - High level motorway information sign
K-5 - Non-motorway advance information sign
K-6 - Non-motorway information panels
K-7 - Signposts for cyclists and moped riders
K-8 - Signposts (stack sign) for cyclists and moped riders
K-9 - Detour. Alternative route shown on a non-motorway sign
K-10 - Advance warning panel within a built-up area
K-11 - Pre-sort sign on a non-motorway
K-12 - Local signpost within a built-up area showing names of individual districts
K-13 - Signpost within a built-up area showing district numbers
K-14 - Route for the transportation of hazardous substances
K-15
Route indication for the transportation of hazardous substances on route information signs