The document describes an electronic toll collection system based on global positioning system (GPS) technology. The proposed system uses GPS receivers in vehicles to determine location and transmit it via GSM modem to a management center. When a vehicle enters a toll area, an IR receiver detects it and sends a message with the vehicle ID and location to the management center. The management center then processes this information, deducts the toll amount from the vehicle owner's account, and sends messages to control the vehicle if the account is insufficient. The system aims to provide fast, safe toll collection without human involvement at toll plazas.

1. ELECTRONIC TOLL COLLECTION SYSTEM BASED ON
GLOBAL POSITIONING SYSTEM TECHNOLOGY
Abstract:
Currently, most electronic toll collection (ETC) systems around the world are
implemented by DSRC (dedicated short range communication) technology. However global
positioning system technique is applied to ETC in recent years. It is an innovative technology for
Expressway Network electronic toll collection solution. In this paper, the frame composing and
working flow of the system are described.
Existing system:
In the toll gate every vehicle has to wait for some time to pay the money and there
should be a person to collect the money and to verify the vehicles in the database. As this process
is time consuming and there are possibilities of human errors and congestion this traditional
system has got lots of disadvantages. Hence we propose this system
Proposed system:
The purpose of the project is to provide a fast and safe environment for toll collection
and to automatically control the vehicle movements at the toll stations by GPS, GSM technology.
In this project is having three module 1) vehicle section: It consists of GPS receiver, GSM
modem and IR receiver 2) Toll tax unit: it consists of IR receiver, controller and GSM modem 3)
Management center: it consists of GSM modem interfaced with PC. In vehicle, the GPS modem
receives latitude and longitude of earth from satellite and fed to ARM processor. The ARM
processor checks the status of IR receiver and if the vehicle enters toll tax unit the IR receiver
receives the signal from IR transmitter in Toll tax unit. Then the ARM processor sends message
about vehicle ID and current location to Management center. In management center the PC
receives the message via GSM modem and process it based on GPS value and vehicle ID, then
the charges will be applied for that vehicle and amount will be reduced from the vehicle owner

2. account. If the account of vehicle’s owner accounts insufficient means Management center send
code message to vehicle using GSM and stop the vehicle. In vehicle section the message will be
received based on the message the vehicle will be controlled. Then the vehicle owner has to pay
money in toll tax unit, the paid information passes to management center and management center
send the permission to vehicle section to switch on vehicle.
Block Diagram:
Vehicle Section:
Power Supply
LCD Modules
GPS
Receiver
UART0
Driver
Circuit
ARM
Processor
Motor
IR
Receiver
GSM
UART1
Modem

3. Toll Tax Unit:
Power Supply
IR
Transmitter
Keys
Management Center:
GSM
Modem
AT89C51
Microcontroller
MAX232

4. Power Supply
GSM
Modem
MAX232
Hardware Requirements
1. ARM7 Processor & power supply
2. 8051 Microcontroller
3. GSM Modem
4. GPS Modem
5. IR transmitter and receiver
6. LCD modules
7. Motor drivers
Software Requirements
1. Embedded C
2. Keil compiler.