The Golden Quadrilateral of India connects which of the following places?

The Golden Quadrilateral (GQ) is a major national highway network in India that connects the country's four primary metropolitan cities: Delhi, Mumbai, Chennai, and Kolkata [2]. Launched in 1999 under the National Highways Development Project (NHDP) and managed by the National Highways Authority of India (NHAI), it spans approximately 5,846 km [3]. The network forms a quadrilateral shape across the Indian subcontinent, linking major industrial, agricultural, and cultural hubs. It is distinct from the North-South and East-West Corridors, which connect Srinagar to Kanyakumari and Silchar to Porbandar, respectively [3]. While these corridors are part of the broader NHDP, the specific 'Golden Quadrilateral' refers only to the loop connecting the four mega-cities of Delhi, Mumbai, Chennai, and Kolkata [1].

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 12: Transport, Communications and Trade > Highways and Roads > p. 3
2. [2] INDIA PEOPLE AND ECONOMY, TEXTBOOK IN GEOGRAPHY FOR CLASS XII (NCERT 2025 ed.) > Chapter 7: Transport and Communication > National Highways Development Projects > p. 77
3. [3] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 12: Transport, Communications and Trade > ii) Phase II— > p. 4