Suggested prototype for Indian based toll system
This project hosts a microcontroller with a limited database consisting RFID key tags. It also maintains an amount(balance) and deducts costs based on the service utilized by the travelers. The deducted amount and existing balance is notified via sms and reflected across centralized database accessible by all the toll plazas. The same can be recharged at multiple points or via online.
The main advantage is however the entire system promotes the idea of going CASHLESS economy and hassle caused in waiting while paying for toll. With this RFID tag attached to the CAR, It allows the passenger to not avail but the reading and deducting process being done on the way. The toll plaza consists a segment of road with inbuilt RFID readers to enable ON THE GO deduction and access of toll system.
The idea can further be powered by IoT allowing users to access their toll more conveniently and government or other central agencies to collect or analyze big data on patterns of vehicle movement within the country.
You can find the code below.