Petrapole is the Indian side of Petrapole-Benapole border checkpoint between India and Benapole of Bangladesh, on the Bangladesh-India border, near Bongaon in North 24 Parganas district of West Bengal. Petrapole border is the only land port in south Bengal. It is also the largest land customs station in Asia.

The Bandhan Express train is an international express rail service which runs between the Indian city Kolkata and the Bangladeshi city Khulna every week. It is the second modern day, fully air conditioned passenger train link between the Indian state West Bengal and Bangladesh. The Bengali word Bandhan means bonding when translated to English. It was initially referred to as the Maitree Express II. A valid visa and passport is required before purchasing a ticket for the Bandhan Express train. Tickets are available at Khulna railway station in Bangladesh and at Chitpur Station in Kolkata, India.