You can travel in local train with express ticket, but in non reservation class, you can't travel in express train with local train tickets. Yes one can travel in passenger train with a ticket of Express train. But no one can travel in the Express train with a ticket of passenger train.

In the context of Indian Railways in 2026, a "Passenger Train" ticket and a "Local/Suburban" ticket are technically for different classes of service, but they share the same base fare for "Unreserved" travel. Generally, a Passenger Train ticket is valid for travel on a local/suburban train for the same distance and route. However, the reverse is not always true; a "Suburban Only" ticket might not be valid on long-distance unreserved "Passenger" or "Express" trains. In 2026, with the widespread use of the UTS (Unreserved Ticketing System) app, most unreserved tickets are digital and tied to specific routes rather than specific train types. If you have a physical unreserved "Passenger" ticket, you can board a local/suburban train, but you must ensure you are not entering a "Reserved" or "First Class" coach. Always verify the "Class" of your ticket (usually General/Unreserved) to avoid being fined by a ticket examiner for traveling in a higher-tier coach than your ticket allows.