what rfid is used in tplex

August 24, 2025

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# RFID Technology in TPLEx: The Backbone of the Philippines' Seamless Tollway

The Tarlac–Pangasinan–La Union Expressway, more commonly known by its acronym **TPLEx**, stands as a critical infrastructure pillar in Northern Luzon, Philippines. It is a vital artery for commerce and travel, significantly reducing journey times between the central and northern regions of the island. To manage the high volume of traffic and ensure a smooth, efficient, and cashless flow of vehicles, **TPLEx** employs a sophisticated electronic toll collection (ETC) system. At the very heart of this system lies **Radio Frequency Identification (RFID)** technology. This article delves into the specific type of **RFID** used, its implementation, and the benefits it delivers to the millions of motorists traversing this expressway.

## The Specific RFID Technology: A Deep Dive into the System


The **RFID** system deployed across the entire **TPLEx**, and in fact integrated with all major expressways in the Philippines under the "RFID" branding, is not a single proprietary technology but a carefully chosen standard. The system in use is based on **passive UHF RFID** (Ultra-High Frequency).

### 1. Understanding Passive UHF RFID

A **passive** **RFID** tag has no internal power source. Instead, it is powered by the electromagnetic energy transmitted from the **RFID** reader's antenna. When a vehicle approaches a toll plaza, the overhead reader unit (mounted on a gantry) emits a radio signal. This signal energizes the tiny microchip within the **RFID** sticker tag affixed to the vehicle's windshield. Once powered, the tag reflects back a unique identification signal to the reader. This entire process happens in milliseconds.

The **UHF** frequency band, specifically operating around 920-925 MHz in the Philippines (as allocated by the National Telecommunications Commission), is chosen for its excellent combination of read range and data transfer speed. A **UHF** system can reliably read tags from a distance of several meters, even on vehicles moving at high speeds, which is a fundamental requirement for open-road tolling.



### 2. The "Autosweep" and "EasyTrip" Ecosystem

It is crucial to clarify that **TPLEx** itself is op The Use of RFID for Human Identity Verification