This standard applies to technical means of rehabilitation of blind and deaf-blind people and establishes the parameters of sound
GOST R 51648-2000 history
2000GOST R 51648-2000 Acoustic and tactile signals for traflic lights for vision and vision-and-hearing impaired persons. Parameters
GOST R 51648-2000 Acoustic and tactile signals for traflic lights for vision and vision-and-hearing impaired persons. Parameters was changed to GOST R ISO 23600-2013 Assistive products for persons with vision impairments and persons with vision and hearing impairments. Acoustic and tactile signals for pedestrian traffic lights.