structural:expansion, quality:corruption, linguistic:voice_change, structural:reformatting
Road

Chennai has an extensive road network covering about 1,780 km (1,110 mi) as of 2023. Chennai is one of the termini of the Golden Quadrilateral system of National Highways connecting it to Mumbai and Kolkata. In addition, two other major national highways namely, NH 45 and NH 205 originate from the city while it is connected to other major towns of the state and Puducherry by state highways. The city has grade separators and flyovers at major intersections, and two peripheral roads (inner and outer ring roads). There are two expressways under construction: Chennai Port–Maduravoyal Expressway and Bangalore–Chennai Expressway.

As of 2021, there are over six million registered vehicles in the city. Public bus transport is handled by the Metropolitan Transport Corporation of Tamil Nadu State Transport Corporation, which is run by the Government of Tamil Nadu. It was established in 1947 when private buses operating in Madras presidency were nationalized by the government and runs about 3233 buses As of 2023. State Express Transport Corporation Limited (SETC), established in 1980, runs long-distance express services exceeding 250 km and above and links the city with other important cities and adjoining states of Andhra Pradesh, Karnataka, Kerala and the Union Territory of Puducherry. SETC operates various classes of services such as semi-deluxe, ultra-deluxe and air-conditioned with advance booking and reservation on all of its routes. Chennai Mofussil Bus Terminus is one of the largest bus stations in Asia and caters to outstation buses. The other means of road transport in the city include vans, auto rickshaws, on-call metered taxis and tourist taxis.