As per NHAI and Indian Roads Congress, expressways are access controlled highways with a divided carriageway, designed for high speed vehicular movement and heavy traffic.

[1] There is a central reservation or median that separates the flow travelling in opposite directions.

[3] Some highways, built by State Governments, which may be fully access controlled or may be limited access controlled, are declared or named as expressways by their respective State Governments.

The upgradation of highway is a Brownfield Expressway Project which has high traffic demand and is a part of both rural and urban setup.

[11] The majority of the investment required for constructing expressways comes from the central government.

[13] The National Highways Development Project by the government of India aims to expand the country's current expressway network and plans to add an additional 18,637 km of greenfield expressways by 2025 apart from building 4 lane greenfield national highways of 50,000 km length.

The Ministry of Road Transport and Highways is set to unveil a plan for constructing 50,000 km of new expressways by 2037 in the first 100 days of the new government.The program, replacing Bharatmala, aligns with Vision 2047 and aims to reduce logistic costs and modernize road infrastructure.

The following list refers to the expressways built by NHAI to connect areas within the state.