Home Internet of Things Aerospace Apparel Energy Defense Health Care Logistics Manufacturing Retail

Ask The Experts Forum

BlogsAsk The Experts ForumHow Can RFID Monitor Bus or Train Riders?

How Can RFID Monitor Bus or Train Riders?

Posted By RFID Journal, 08.28.2014

I am looking for an RFID reader that could be fitted into a bus or a train, with each passenger sitting in the vehicle tagged automatically. Would I require UHF RFID tags, or just general tags?

—Name withheld


You would require ultrahigh-frequency (UHF) RFID transponders. Ideally, these would be designed to operate at 865 MHz to 868 MHz, as opposed to, say, 915 MHz, which is also in the UHF spectrum. That would give you the best performance. Reading tags on each person sitting on a bus or a train could be a bit of a challenge, however. A typical train care is 60 to 85 feet (18 to 26 meters) in length, whereas UHF tags can be read from a distance of 10 to 30 feet (3 to 9 meters). You would likely require multiple readers or reader antennas in each bus or train car.

What's more, the human body is composed of water, which absorbs RF energy. This can prevent UHF tags near the body from being interrogated consistently. One option would be to use battery-assisted tags. Convergence Systems Ltd. (CSL) manufactures ID badges for this purpose. Another option would be to place a reader near the bus or train car entrance, and then read the tags as riders entered.

—Mark Roberti, Founder and Editor, RFID Journal

Login and post your comment!

Not a member?

Signup for an account now to access all of the features of RFIDJournal.com!

Next Post
Can RFID Labels Be Attached to Parts on ...
Previous Post
Is RFID in Retail Outdated Due to the Co...
Case Studies Features Best Practices How-Tos
Live Events Virtual Events Webinars
Simply enter a question for our experts.
RFID Journal LIVE! RFID in Health Care LIVE! LatAm LIVE! Brasil LIVE! Europe RFID Connect Virtual Events RFID Journal Awards Webinars Presentations