Complex sentence: Because Translohr LRVs cannot run without a guide rail they are not classified as a street-running bus, hence the vehicles that are used on the Clermont-Ferrand network are not equipped with licence plates.
Split into simpler sentences: Because Translohr LRVs cannot run without a guide rail they are not classified as a street-running bus. Hence the vehicles that are used on the Clermont-Ferrand network are not equipped with licence plates.