Train tickets are documents that passengers purchase to travel on a train. They serve as proof of payment and indicate the traveler's destination, departure time, and seat assignment, if applicable. Tickets can be bought at train stations, online, or through mobile apps, making it convenient for travelers to secure their journeys. The price of a train ticket can vary based on factors such as distance, class of service, and how far in advance it is purchased. Some rail companies offer discounts for children, seniors, or groups, making train travel more accessible for everyone.