City transport Control systems 1 Disabled people 1 Drive control 1 Drive solution 1 Elderly people 1 Electric drives 1 Floors 1 Independently rotating wheels 1 Low-floor 1 Running gear 1 Traction motors 1 Tram 1 Urban transportation 1 Vehicle wheels 1 Wheelsets 1 drive solution 1 independently rotating wheels 1 low floor 1 tram 1