Section 45 of The Persons With Disabilities Act, 1995

The appropriate Governments and the local authorities shall, within the limits of their economic capacity and development. Provide for -

1. Installation of auditory signals at red lights in the public roads for the benefit of persons with visual handicap;
2. Causing curb cuts and slopes to be made in pavements for the easy access of wheel chair users;
3. Engraving on the surface of the zebra crossing for the blind or for persons with low vision;
4. Engraving on the edges of railway platforms for the blind or for persons with low visions;
5. Devising appropriate symbols of disability;
6. Warning signals at appropriate places.