Transport between India and Bangladesh two governments moved slowly on implementing a 1980 agreement on improving transport links. In the 1990s, the Indian and Bangladeshi governments collaborated to open bus services between Kolkata, the capital of West Bengal and one of the largest cities in India, and Dhaka, the capital and largest city of Bangladesh. In 2001, another bus service was launched to connect Dhaka with Agartala, the capital of the Indian state of Tripura the second largest city of Northeast India that borders Bangladesh in the east. Since the 1980s, the Indian and Bangladeshi governments have sought to negotiate an agreement permitting commercial vehicles
Geography of West Bengal most famous among these is the Bengal tiger, but numerous species of birds, spotted deer, crocodiles and snakes also inhabit it. It is estimated that there are now 400 Bengal tigers and about 30,000 spotted deer in the area. West Bengal's climate varies from tropical savannah in the southern portions to humid subtropical in the north. The main seasons are summer, rainy season, a short autumn, and winter. While the summer in the delta region is noted for excessive humidity, the western highlands experience a dry summer like northern India, with the highest day temperature ranging from to . At