India are toll roads. Expressways make up approximately of India's road network, as of 2020. The government has drawn up a target to build a network of new expressways by 2022. National Expressways Authority of India (NEAI) operating under the Ministry of Road Transport and Highways will be in-charge of the construction and maintenance of expressways. The NHAI by Government of India aims to expand the expressway network and plans to add an additional of expressways by 2022 apart from existing national highways. India's first 8-lane wide access-controlled expressway, the Delhi Noida Direct Flyway (DND Flyway), operational in January 2001, is an expressway connecting Delhi and Noida in the states of Delhi and Uttar Pradesh. The Mumbai Pune Expressway, connecting Mumbai and Pune in Maharashtra fully operational in 2002, is India's first 6-lane wide access-controlled tolled expressway. The Yamuna Expressway is a six-lane controlled-access expressway opened on 9 August 2012. On 21 November 2016, the six-lane Agra Lucknow Expressway was opened. Under construction as of 2019, the Mumbai–Nagpur Expressway is expected to become the largest expressway in the country. Several expressway projects, such as the Chennai-Bangalore Expressway, Chennai-Salem Expressway, Delhi-Jaipur Expressway, Lucknow-Kanpur Expressway are planned/under-construction. Ganga Expressway is approved and expected to be under-construction by end of 2021. National highways National highways are highways connecting major cities throughout the country with premium quality and are at-grade roads. National Highways are designated with NH, followed by the highway number. Indian national highways are further classified based on the width of the carriageway of the highway. India has around of National Highways as of April 2021 and is expected to reach 200,000km By 2024 consisting of Top Notch Highways And Expressways. National Highways constituted 2.7% of India's total road network, but carried about 40% of road traffic, as of 2013. In 2016, the government vowed to double the highway length from 96,000 to 2,00,000 km. The National Highways Authority of India (NHAI) and the National Highways and Infrastructure Development Corporation Limited (NHIDCL) are the authorities responsible for the development, maintenance and management of the National Highways in India. The NHAI has been undertaking developmental activities under the National Highways Development Project (NHDP) in five phases. From 2018, the pending projects under NHDP are expected to be subsumed under Bharatmala. The NHAI is also responsible for implementing other projects on National Highways, primarily road connectivity to major ports in India. The Golden Quadrilateral