Enhanced Connectivity and Reduced Transportation Costs: The construction and improvement of NH-12 directly enhance connectivity between North and South Bengal, creating a more efficient transportation corridor. This improved connectivity translates into reduced transportation costs for goods and people. Reduced fuel consumption, shorter travel times, and lower vehicle maintenance expenses contribute to lower overall logistics costs. Farmers can transport perishable goods faster, reducing spoilage. Businesses can access wider markets, and the movement of raw materials becomes more efficient. This boost in efficiency can lead to a more competitive business environment and attract further investment. The reduced travel time will also encourage tourism.

Stimulation of Local Economies Along the Highway: NH-12 will act as a catalyst for economic development in the regions it traverses. Small towns and rural areas situated along the highway are likely to experience increased commercial activity. New businesses, such as restaurants, repair shops, and retail outlets, will emerge to cater to the needs of travelers and truckers. The highway also facilitates the development of agricultural processing units and cold storage facilities near farming areas, benefiting local farmers and increasing the value of their produce. Real estate values in surrounding areas are likely to appreciate, leading to further investment in infrastructure and development.

Boost to Trade and Tourism: The improved infrastructure stimulates both domestic and international trade. Easier access to ports and border crossings facilitates the movement of goods to and from West Bengal. This can boost export-oriented industries and attract foreign investment. Tourism also stands to benefit significantly. Improved access to tourist destinations along the route, such as Bakkhali and other coastal areas, will increase tourist footfall, boosting the hospitality sector and creating employment opportunities. The enhanced connectivity could also encourage the development of new tourist circuits, linking different attractions and promoting regional tourism. The overall impact would be a more vibrant and diverse economy.

• Road Widening and Capacity Expansion: One of the major infrastructure upgrades on National Highway 12 has been systematic road widening to handle increasing traffic volumes. Several stretches have been expanded from two lanes to wider carriageways, especially near towns and high-traffic zones. This has improved vehicle flow and reduced congestion during peak hours. Wider roads have also enhanced safety by providing better lane discipline and overtaking space. These upgrades are crucial for supporting long-distance freight and passenger movement along the corridor.
• Improvement of Bridges and Culverts: NH 12 passes through multiple riverine and low-lying regions, making bridges and culverts critical infrastructure components. Older bridges have been strengthened or reconstructed to support heavier vehicles and higher load capacities. New culverts and drainage channels have been added to prevent waterlogging during monsoon seasons. These improvements ensure uninterrupted connectivity even during heavy rainfall. Strengthened structures also improve the overall durability of the highway.
• Enhanced Road Safety Measures: Safety upgrades form a key part of NH 12's development plan. Proper road markings, reflective signboards, speed-calming measures, and median dividers have been installed across several stretches. Pedestrian crossings and service roads near populated areas have improved safety for local residents. Better street lighting in urban and semi-urban sections enhances night-time visibility. These measures have collectively reduced accident risks and improved driving comfort.
• Drainage, Surface Quality, and Maintenance: Improved drainage systems have been developed to address flooding and road damage during monsoons. High-quality pavement materials and resurfacing work have increased road durability and reduced maintenance frequency. Regular monitoring and repair programs help maintain consistent surface quality. These upgrades result in smoother rides and lower vehicle operating costs. Proper maintenance also extends the lifespan of the highway.
• Future-Oriented Infrastructure: Enhancements Ongoing and planned upgrades include bypass roads around congested towns, better integration with feeder roads, and modern traffic management systems. These developments aim to reduce travel time and enhance logistics efficiency. With continued investment, NH 12 is evolving into a safer, more reliable, and future-ready transport corridor connecting Dalkhola to Bakkhali in West Bengal.

National Highway 12, stretching from Dalkhola to Bakkhali in West Bengal, serves as a crucial transport link, enhancing connectivity across the region. This roadway facilitates the movement of goods and people, contributing to local economies and tourism. Its strategic importance is underscored by the improved access it provides to various districts, promoting regional development. The highway, which traverses diverse landscapes, also plays a vital role in ensuring safer and more efficient travel. Ongoing infrastructure improvements aim to enhance road safety and capacity, underscoring the government's commitment to supporting economic growth in West Bengal's northeastern corridor.