Abstract
People travelling by vehicles to reach their desired destination find difficult to choose the safe route. A road may be damaged due to natural calamities and not be safe for vehicles. Those who are travelling long distances will not have enough knowledge regarding the safety of the road. An IoT device monitors road conditions and generate an alert message. The message is generated when water level reaches threshold level. Data analysis algorithm is employed to detect the safe route using previous conditions. The message is transmitted to a Road Side Unit (RSU) which then broadcasts it to a vehicle. The vehicle then sends the message to next nearest vehicle. This broadcasting happens until all vehicles within a range receives the message. Other Road Side Units helps in improving the signal strength of the message. RSU’s can also send message to vehicle if there is failure in Vehicle-Vehicle Communication. Protocol used for message broadcasting is Adhoc On-Demand Distance Vector Routing (AODV). It is slightly modified to improve efficiency and accuracy. Based on the alert message received vehicular nodes can take different path that is safe to reach the destination.
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