Economic Significance of Transport:
An efficient transport system is the physical circulatory network of the national economy, connecting agrarian hinterlands with urban manufacturing centers, integrating domestic markets, and enhancing defense mobility.
Roadways (Dominant Domestic Transport Mode):
- Inherent Advantages of Roadways over Other Modes:
1. Door-to-Door Service: Provides seamless point-to-point transit from producer warehouse to consumer doorstep, eliminating transshipment handling costs.
2. Feeder to Other Modes: Acts as an indispensable feeder network linking farms and towns to railway stations, seaports, and airports.
3. Topographical Versatility: Roads can be easily engineered across rugged mountainous gradients, sharp escarpments, and desert sand where railway tracks cannot be laid.
4. Economical for Short Distances: Highly cost-effective for transporting small consignments of perishable agricultural produce (milk, fruits, vegetables) over short to medium distances. - Major Highway Infrastructure Projects:
• Golden Quadrilateral: A $5,846\text{ km}$ high-speed 4/6-lane expressway network connecting India's four major metropolitan mega-cities: Delhi, Mumbai, Chennai, and Kolkata.
• North-South & East-West Corridors: NS corridor connects Srinagar (J&K) to Kanyakumari (Tamil Nadu, $4,000\text{ km}$); EW corridor connects Silchar (Assam) to Porbandar (Gujarat, $3,300\text{ km}$), intersecting at Jhansi (UP).