Connecting physical items to the Internet (IoT) enables the development of intelligent systems and cutting-edge technologies like the intelligent transportation system (ITS). IoT solutions greatly aid the development of the worldwide IoT in Intelligent Transportation Systems. IoT-based vehicle connectivity ushers in a new era of communication that will eventually lead to ITS. IoT combines the storage, processing, and computing of sensor data with data analytics to efficiently manage the traffic system. Automating railroads, roads, airports, and ships thanks to IoT-based intelligent transportation systems (IoT-ITS) improves customer perceptions of how things are moved, tracked, and delivered. This paper presents an intelligent accident detection, prevention, and alert system that use the Internet of Things and artificial intelligence sensors. Through this proposed model, we cannot only detect the accident and send it to the server but also create a google API map that can show the accident-prone areas to the registered user and send them messages or alarms to slow down their speed. This will help users to identify accident-prone areas and reduce road accidents.