DESCRIPTION:
Nowadays, increasing traffic volume causes congestions commonly around the toll gate of highway. Therefore, the new technique is urgently required to reform the problem of congestions. Automated toll collection system is one of the methods to solve the above conditions. The automated system is composed of several subsystems. The RFID technology, computer database, power supply, microcontroller, motor and inferred device are included. Automated system can bring the several sectors for toll gates as saving time and reducing the human workers. Develop the prototype model, which reproduces the operation states of various toll gate systems: passing time and waiting time.
The RFID tag and RFID reader are contained in RFID technology. RFID means Radio Frequency Identification that consists of the tags which can be either active or passive tag. Passive tag do not have own power supply, much cheaper to manufacture and small coil antenna is used. On the other hand, active tag must have own power supply. It has longer range and larger memories. It can store additional information sent the RFID reader. RFID reader is an interrogator. It is placed at the toll gate on every single row where vehicles are passed. The reader contains an RF module, which acts as both transmitter and receiver of radio frequency signals. The reader generates the signal to receive the data from tag. The received signals send to the computer system which contains Graphical User Interface (GUI) and the database of all users. The ID number from the tag checks with the recorded database and deduces the" toll tax. The computer and microcontroller are connected with USB cable. So, the PIC 18F4550 microcontroller is very compatible for system. The microcontroller will display the amount of deposits on LCD and the gate will open. The IR sensor senses the vehicle motion for closing gate automatically.

The Electronic Toll Collection(ETC) system is a new system designed to enhance convenience for drivers by enabling cashless toll collection and thus reducing congestion at highway tollgates.
The existing RFID sensor tag significantly store information but the information storage is limited. It can read only one tag at once. It has reduced security system. The Barcode problem may occur, this may cause double charge of the vehicle. The barcode reading capability can be affected by dirt, water and scuffing.
In order to overcome all problems, we come across zigbee technology which has more advantage when compared to RF technology. The automatic toll collection process avoid fuel loss, saving the time in collecting toll and eliminate illegal toll entry.
The concept behind this zigbee technology is once the vehicle enters the chargeable zone, the zigbee transmitter sends the information to the toll system which has zigbee receiver to store all the database of the vehicles. We also added the load cell concept which is to calculate the load in the vehicles, and estimate the extra cost if any additional load occurs than the normal weight age. The GSM is used to track the vehicle in cellular service to find the theft vehicles easily.

Advantage Of Proposed System
• The waiting time is reduced in this method.
• In this technique high security is provided.
• No need to pay the amount or exchange the cash due to online transaction.
• Theft vehicle can be easily traced by this technology.
• Power saving, as a result of the short working period, low power consumption of communication, and standby mode.
• Short time delay, typically 30 ms for device searching, 15 ms for standby to activation, and 15 ms for channel access of active device.
• Large network capacity: One ZigBee network contains one master device and maximum 254 slave devices. There can be as many as 100 ZigBee networks within one area.

REFERENCES
[l]Asif Ali Laghari, "RFID Based Toll Deduction System", I.J. Information Technology and Computer Science, 2012, 4, 40-46 Published Online April 2012 in MECS (http://www.mecs-press.org/)DOI: 10.5815/ijitcs.2012.04.06
[2] Hitachi's RFID powder freaks us the heck out". Engadget http://www.engadget.com/2007/02/14/hitachis-rfid-powderfreaks-us-the-heck-out. Retrieved 2010-04-24.
[3]Lovemore Gunda, "RFID BASED AUTOMATIC TOLLGATE SYSTEM (RATS)", CIE42 Proceedings, 16-18 July 2012, Cape Town, South Africa © 2012CIE&SAIIE
[4]Rahman, Rohisyam (2007-07-23). "Case Study: Malaysian Smart Shelf. http://www.rfidasia.info/2007/07/case-study, Malaysian - smart - shelf-htm Retrieved 2007-08-03.
[5] Raj Bridgelall, Senior Member, IEEE, "Introducing a Micro wireless architecture for Business Activity Sensing ", IEEE International Conference RFID, April 16-17,2008.
[6]Sachin Bhosale, "AUTOMATED TOLLPLAZA SYSTEM USING RFID", ISSN: 2278 - 7798 International Journal of Science, Engineering and Technology Research (IJSETR) Volume 2, Issue 1, January 2013.
[7] Sewon Oh, Joosang Park, Yongioon Lee, "RFID-based Middleware System for Automatic Identification", IEEE International Conference on Service Operations and Logistics, and Information, 2005.
[8]Shi-Cho Cha Kuan-Ju Huang Hsiang-Meng Chang, " An Efficient and Flexible Way to Protect Privacy in RFID Environment with Licenses ", IEEE International Conference RFID, April 16-17,2008.

CLAIMS
1. To claim the Control algorithm and objectives used in the research work
2. To claim IOT platform used for the payment system
3. To claim for the motor design and controller for automatic opening of the system
4. To claim for the driver circuit used for the motor speed control