Section 47(1)(a) in Tamil Nadu Combined Development and Building Rules, 2019
(a)The minimum width of the public street or road on which the site abuts or gains access shall be 7.2m. for residential layout developments and 9m. for industrial layout developments. For subdivisions the minimum width of the passage or public streets or road on which the site abuts or gains access shall be as required for different uses and types of developments.