In the Indian Railways, TQ stands for Tatkal Quota, a system designed for travelers needing to book tickets at short notice due to emergencies or sudden plans. Given the high demand for popular trains, a percentage of seats is reserved under this quota to accommodate last-minute passengers. Booking under the Tatkal Quota opens exactly one day before the train's departure and operates on a first-come-first-served basis. TQ tickets are significantly more expensive than regular tickets, with surcharges of 10% to 30% added to the base fare, depending on the class of travel. Additionally, confirmed TQ tickets come with a strict no-refund policy, except in cases of train delays exceeding three hours or cancellations. Passengers are limited to four per ticket and must provide valid ID during booking and travel, as no discounts apply for senior citizens or students. This system is essential for those requiring immediate travel options in India's extensive railway network.