2003 | Gost R 52131

is the Russian national standard for sign aids and information displays for disabled persons . It defines the technical requirements for visual, tactile, and audible signs to ensure an accessible environment. ♿ Key Technical Requirements

Hospitals, schools, and government offices. Transport Hubs: Railway stations, airports, and bus stops. gost r 52131 2003

Specific contrast ratios, font sizes, and placement heights. is the Russian national standard for sign aids

The standard specifies how information should be presented to be accessible to various mobility and sensory groups: and bus stops. Specific contrast ratios