2016GOST 23120-2016 Steel flights of steps, stair landings and railings. Specifications
2013GOST 2.120-2013 Unified system for design documentation. Technical design
1970GOST 29120-1991 Uniform provisions concerning the approval of: 1. Rear underrun protective devices; 2. Vehicles with regard to the installation of an rear underrun protective device an approved type; 3. Vehicles with regard to their rear underrun protection