Electronic Toll Collection Electronic Toll Collection - National ...
Electronic Toll Collection Electronic Toll Collection - National ... Electronic Toll Collection Electronic Toll Collection - National ...
ETC – Apex Committee Report 2 RFID Transceiver and Tag Specifications The two core components of the ETC system are RFID Transceivers and Tags, which interact for the toll transaction to take place. As the vehicle reaches the toll plaza, the passive tag on the vehicle’s windshield is read by the transceiver installed at the toll plaza. A key component for implementation of nationwide RFID based ETC is interoperability, which requires integration and standardization. The tag on the vehicle needs to be read by all the transceivers and at the same time, all the tags should be read by a particular transceiver. Therefore, the requirement is to operate with transceivers and tags with certain common specifications. The Committee finalized these specifications under two broad parameters, viz. General and Environmental. The general specifications comprise frequency, power, protocol and other standards. Due consideration was given to local conditions while formulating environmental specifications, like relative humidity, operating temperature and storage temperature. In addition, the specifications for the transceiver include operating characteristics and for the tag include installation procedure and memory particulars. While these specifications on the transceiver and tag need to be adhered to mandatorily to be a part of the ETC system, the Committee also defined functional requirements of the AVI system and data exchange formats. This exchange of data takes places between the tag & transceiver, transceiver & toll lane controller, toll lane controller & toll plaza server and toll plaza server & Central ETC system. The data exchange flows are shown below. To/ From CCH Database Toll Plaza Server having the Database management system Client Application Resides here Lane Controller Traffic control (Entry barrier, Traffic lights, User fare displays) Figure I: Schematic Data Exchange The document on the entire set of specifications, AVI functions and data exchange flows, finalized through a stakeholder workshop, forms Enclosure I. Vehicle Class Input from AVC Camera control & Image / Video clip Acquisition RFID Transceiver-II Vehicle Direction through ETC Lane Entry RFID Transceiver-I 10 | P a g e September 2011
ETC – Apex Committee Report 3 ETC System Architecture ETC is a system enabling collection of toll payments electronically, allowing for near-nonstop toll collection and traffic monitoring. ETC utilizes vehicles equipped with transponders (electronic tags), wireless communication, in-road/ roadside sensors, and a computerized system (hardware and software) for uniquely identifying each vehicle, electronically collection of toll, providing general vehicle/ traffic monitoring and data collection. It serves the dual purpose of collecting the toll electronically and strengthening control over the toll plaza operations. ETC facilitates the execution of toll transactions while vehicles travel at near-highway cruising speed. ETC can reduce congestion, increase operating efficiency, improve travel time, reduce pollution, and improve safety of the roadway facility and surrounding corridors. To understand the fundamentals first, the basic transactions in the ETC system have been identified. The three broad categories for such identification are Tag distribution, Toll road user account registration & recharge and Toll transaction. The diagram below illustrates this entire transactional architecture of the Central ETC System (CES). Designat Designated ed outlets Designated out let s outlets (POS) Receipt entry in system 5 4 Demand raised in system Identified tags transported 1 2 3 Demand allocated in system Dispatch entry in system Designated Designat ed out outlets Manufacturers let s 1b User approaches outlet (with/ without print) 2 Outlet verifies and burns & affixes tag 3 Account request Web Application (Portal) Distribution Agency Designated outlet Manufactr. 6 Deposit Escrow account Toll Road User 1a 5 Online form Username/ password Recharge (Online, SMS, IVRS, POS) 4 Clearing House Toll Road User 5 Intimation Toll Operator Toll Operator registers/ updates online 2 User data pushed to Plaza Transaction data pushed to CH 4 1 Toll Operator 3 Vehicle reaches Toll plaza; Transceiver reads Tag (AVI); Classification; Enforcement Figure II: ETC Transactional Architecture In simple words, CES is the central core application (web portal) responsible for the control of all the ETC services delivered to subscriber through Point of sale terminals, Toll plaza operators and User support desk. Based on the above transactional architecture, detailed functionalities of the system have been explained under the following four heads. ► Central ETC System Application ► Toll Plaza Application (Also referred to as Client Application) 11 | P a g e September 2011
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- Page 17 and 18: ETC - Apex Committee Report J. CES
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ETC – Apex Committee Report<br />
2 RFID Transceiver and Tag Specifications<br />
The two core components of the ETC system are RFID Transceivers and Tags, which interact for the<br />
toll transaction to take place. As the vehicle reaches the toll plaza, the passive tag on the vehicle’s<br />
windshield is read by the transceiver installed at the toll plaza.<br />
A key component for implementation of nationwide RFID based ETC is interoperability, which<br />
requires integration and standardization. The tag on the vehicle needs to be read by all the<br />
transceivers and at the same time, all the tags should be read by a particular transceiver. Therefore,<br />
the requirement is to operate with transceivers and tags with certain common specifications.<br />
The Committee finalized these specifications under two broad parameters, viz. General and<br />
Environmental. The general specifications comprise frequency, power, protocol and other<br />
standards. Due consideration was given to local conditions while formulating environmental<br />
specifications, like relative humidity, operating temperature and storage temperature. In addition,<br />
the specifications for the transceiver include operating characteristics and for the tag include<br />
installation procedure and memory particulars.<br />
While these specifications on the transceiver and tag need to be adhered to mandatorily to be a<br />
part of the ETC system, the Committee also defined functional requirements of the AVI system and<br />
data exchange formats. This exchange of data takes places between the tag & transceiver,<br />
transceiver & toll lane controller, toll lane controller & toll plaza server and toll plaza server &<br />
Central ETC system. The data exchange flows are shown below.<br />
To/ From CCH<br />
Database<br />
<strong>Toll</strong> Plaza<br />
Server having<br />
the Database<br />
management<br />
system<br />
Client<br />
Application<br />
Resides here<br />
Lane<br />
Controller<br />
Traffic control<br />
(Entry barrier,<br />
Traffic lights,<br />
User fare<br />
displays)<br />
Figure I: Schematic Data Exchange<br />
The document on the entire set of specifications, AVI functions and data exchange flows, finalized<br />
through a stakeholder workshop, forms Enclosure I.<br />
Vehicle Class<br />
Input from AVC<br />
Camera control<br />
& Image /<br />
Video clip<br />
Acquisition<br />
RFID<br />
Transceiver-II<br />
Vehicle<br />
Direction<br />
through ETC<br />
Lane<br />
Entry RFID<br />
Transceiver-I<br />
10 | P a g e September 2011
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