In recent years, urban transportation has become more complicated and congested as a result of the popularity and use of private transportation by civilians all over the world. This has resulted in severe traffic congestion during peak hours, highlighting the importance of a well-functioning traffic management system in order to prevent collisions, emissions, and time waste . The Internet of Things (IoT) seems to be gaining popularity. The Internet of Things (IoT) is a new smarter technology that has contributed to transportation during traffic management through cloud use and proper tracking using various machine learning methods. Traffic management systems that are efficient and reliable help to reduce traffic congestion.
2. Literature Riview
2.1. Intelligent Traffic System
Existing signal system lacks the technology to handle the traffic in efficient way Authors mentioned in  Using IoT they have proposed a system that use of different sensors which can be deployed on the roadside for collecting data regarding congestion which will be further processed by the micro controller situated on the traffic signal higher priority for emergency vehicles like Ambulance such that the lane that contains emergency vehicle would go first until emergency vehicle passes. A hybrid approach in  is used to optimize traffic flow on roads and an algorithm is devised to manage various traffic situations efficiently. The authors create a system that uses data from cameras and sensors to calculate traffic density and then adjusts traffic signals. During a traffic jam, the authors employed an algorithm based on Artificial Intelligence to forecast future traffic density and to decrease traffic congestion. They also utilized RFID to prioritize emergency vehicles such as ambulances and fire trucks. The authors also considered what would happen if there was a fire on the road, and how they would handle it. Smoke sensors were employed as part of the system to identify this circumstance. The efficiency of the suggested traffic management system has been shown by the authors using a prototype that not only optimizes traffic flow but also connects adjacent rescue departments to a centralized server.
2.2. Advanced Traffic Management System
The existing traffic prediction methods mostly dedicated to highway and urban traffic management, and limited studies focused on collector roads and closed campuses Authors said in  where they have proposed an IoT based system model to collect, process, and store real-time traffic data for such a scenario. The system’s main purpose was to increase mobility by providing real-time traffic updates on traffic congestion and odd traffic events via roadside messaging devices. The suggested technology might send out early warning signals to citizens, allowing them to save time, especially during peak hours. The device also transmits updates from the administrative authorities on traffic. With a Context of Bangladesh in  proposed a real-time traffic management system (TMS) using the Internet of Things (IoT) and data analytics. Ultrasonic sensors were used to detect traffic density, and after analyzing the sensor data, the system controller controlled the traffic signal timing using a traffic management algorithm, as well as sending data to a cloud server via a Wi-Fi module. As the authors pointed out, if an emergency vehicle is recognized, the proposed system offers priority, i.e. long signal duration, to pass through the intersection. If a car violates a traffic light, the system can identify it and issue a fine, which is paid through the Traffic Wallet smartphone app. This proposed system is low-cost, easy-to-install, and simple-to-maintain.
3. Internet of Things
The Internet of Things (IoT) is a paradigm in which objects with sensors, actuators, and processors interact with one another to accomplish a goal. About 85% of networks are disconnected and don’t exchange data with one another or the cloud, The Internet of Things (IoT) is one such technology that enables interconnection and also refers to making devices smarter by linking them online to acquire and process data, as mentioned by Authors in . The basic concept of creating IoT architecture is to make the machine self-reliant while also being connected to a web server for signal reception. The Internet of Things (IoT) has now reached all corners of the globe is essentially a physical-digital interaction . A plethora of sensors and actuators communicate between the digital and physical worlds as Figure 1(a) describe and Figure 1(b) give a deep understanding of how Sensors, actuators, and processors are used in IoT products.
Figure 1. (a) IoT platform; (b) IoT platform.
3.1. Background on IoT Components in Vehicles
Vehicles of past year’s technology was not more developed compared with today’s technology as SAE has described in vehicle’s levels, where a digital revolution in the 21st century is in form of connected and autonomous vehicle (vehicle to everything, which includes vehicle-to-vehicle, vehicle-to-infrastructure, vehicle-to-network, vehicle-to-cloud, vehicle-to-device and vehicle-to-pedestrian), and we are living in such kind of digital because of integration of Internet of Things (IoT) components have been applied into vehicles day to day as shown in Figure 2. They become part of a network. Vehicles can communicate with each other, with the surrounding infrastructure and with other drivers. Gradually the technologies of IoT in vehicles assisted driving (steering, acceleration and brake support) which help to decrease different problems in transportation . As the technology in vehicle increase as the transportation issues decrease the international Society of Automotive Engineers (SAE) helped to describe the technology in vehicles using levels on Figure 3.
Figure 2. Categories of connectivity based IoT.
Figure 3. Connected and autonomous vehicle levels .
3.2. Ways IoT Is Transforming Transportation Management
The Internet of Things (IoT) is transforming our lives at a breakneck rate. Environmental monitoring and transportation networks are two areas where the Internet of Things finds use. This is particularly true in the automotive industry, which is home to some of the most significant inventions . Here are some of the biggest ways the IoT is transforming the automotive industry and our roads :
➢ The way people drive
➢ Reduce pollution and energy
➢ Improving road safety
➢ Solve traffic congestion in cities
➢ Lead to better roads
➢ Environment applications
➢ Mobility applications
3.3. Intelligent Traffic Management System
As shown in Figure 4, an intelligent traffic management system based on IoT can be divided into three groups. This refers to a range of tools such as traffic engineering principles, software, hardware, and communication technologies that can be applied to the transportation system in an integrated manner to enhance its efficiency and safety. Table 1 discusses various methods of traffic and vehicle monitoring and control several techniques and methods are based on internet of things (IoT) approaches, as seen in Figure 5. For future Enhancement in Intelligent Transportation Management system Table 2 gives the inclusive outlook of few recent research articles in the intelligent traffic management system based on internet of things (IoT).
Figure 4. Intelligent traffic management system block.
Table 1. Technology and performance parameters used in transportation using IoT.
Figure 5. IoT approach for traffic management.
4. Future Anhancement in Intelligent Transportation Management System
Table 2. Future anhancement in intelligent transportation management system.
This research paper provides a comprehensive overview of the intelligent traffic system based on the Internet of Things (IoT), its benefits and drawbacks in terms of real-time analysis of traffic congestion, pedestrian crossings, and free path availability for emergency vehicles in urban areas, as well as its future development toward intelligent traffic regulations and alert systems for vehicles.
 Toshniwal, A., Bhaskar, S., Doshi, S., Vaity, K. and Bandekar, P.A. (2018) Traffic Congestion Management and Monitoring in IoT. International Journal for Scientific Research and Development, 6, 2321-0613.
 Javaid, S., Sufian, A., Pervaiz, S. and Tanveer, M. (2018) Smart Traffic Management System Using Internet of Things. 2018 20th International Conference on Advanced Communication Technology (ICACT), Chuncheon, 11-14 February 2018, 393-398.
 Sarrab, M., Pulparambil, S. and Awadalla, M. (2020) Development of an IoT Based Real-Time Traffic Monitoring System for City Governance. Global Transitions, 2, 230-245.
 Kadar, A. and Masum, M. (2018) An Internet of Things (IoT) Based Smart Traffic Management System: A Context of Bangladesh. 2018 International Conference on Innovations in Science, Engineering and Technology (ICISET), Chittagong, 27-28 October 2018, 418-422.
 Lu, Q., Tettamanti, T., Hörcher, D., Varga, I. and Q. Lu, (2020) The Impact of Autonomous Vehicles on Urban Traffic Network Capacity: An Experimental Analysis by Microscopic Traffic Simulation Experimental Analysis by Microscopic Traffic Simulation. Transportation Letters, 12, 540-549.
 Aris, I.B., Sahbusdin, R.K.Z. and Amin, A.F.M. (2015) Impacts of IoT and Big Data to Automotive Industry. 2015 10th Asian Control Conference (ASCC), Kota Kinabalu, 31 May-3 June 2015, 1-5.
 Sadhukhan, P. and Gazi, F. (2018) An IoT Based Intelligent Traffic Congestion Control System for Road Crossings. 2018 International Conference on Communication, Computing and Internet of Things (IC3IoT), Chennai, 15-17 Februray 2018, 371-375.
 Yogheshwaran, M., Praveenkumar, D., Pravin, S., Manikandan, P.M. and Saravanan, S. (2020) IoT Based Intelligent Traffic Control System. International Research Journal of Engineering and Technology (IRJET), 7, 59-63.
 Sachenko, A., Osolinskyi, O., Bykovyy, P., Dobrowolski, M. and Kochan, V. (2020) Development of the Flexible Traffic Control System Using the Lab View and Thing Speak. 2020 IEEE 11th International Conference on Dependable Systems, Services and Technologies (DESSERT), Kyiv, 14-18 May 2020, 326-330.
 Hawi, R., Okeyo, G. and Kimwele, M. (2018) Smart Traffic Light Control Using Fuzzy Logic and Wireless Sensor Network. 2017 Computing Conference, London, 18-20 July 2017, 450-460.
 Saifuzzaman, M., Moon, N.N. and Nur, F.N. (2018) IoT Based Street Lighting and Traffic Management System. 2017 IEEE Region 10 Humanitarian Technology Conference (R10-HTC), Dhaka, 21-23 December 2017, 121-124.
 Bhate, S.V., Kulkarni, P.V., Lagad, S.D., Shinde, M.D. and Patil, S. (2018) IoT Based Intelligent Traffic Signal System for Emergency Vehicles. 2018 Second International Conference on Inventive Communication and Computational Technologies (ICICCT), Coimbatore, 20-21 April 2018, 788-793.
 Perumalla, B.K. and Babu, M.S. (2016) An Intelligent Traffic and Vehicle Monitoring System Using Internet of Things Architecture. International Journal of Science and Research (IJSR), 5, 2013-2016.
 Sumi, L. and Ranga, V. (2018) An IoT-Vanet-Based Traffic Management System for Emergency Vehicles in a Smart City. In: Kumar, S.P., Sambit, B., Hatzilygeroudis, L.K. and Narayan, S.M., Eds., Advances in Intelligent Systems and Computing, Volume 708, Springer, Singapore, 23-31.
 Zhang, H. and Lu, X. (2020) Vehicle Communication Network in Intelligent Transportation System Based on Internet of Things. Computer Communications, 160, 799-806.
 Darbari, M., Yagyasen, D. and Tiwari, A. (2015) Intelligent Traffic Monitoring Using Internet of Things (IoT) with Semantic Web. In: Satapathy, S., Govardhan, A., Raju, K. and Mandal, J., Eds., Emerging ICT for Bridging the Future-Proceedings of the 49th Annual Convention of the Computer Society of India (CSI), Volume 1, Springer, Cham, 455-462.
 Sharif, A., Ping, J., Muhammad, L. and Sharif, I. (2019) Internet of Things Network Cognition and Traffic Management System. Cluster Computing, 22, 13209-13217.
 Sona, D.R., Mendiratta, S. and Dey, D. (2017) Automatic Car Parking System with Visual Indicator along with IoT. 2017 International Conference on Microelectronic Devices, Circuits and Systems (ICMDCS), 1-3.
 Member, A.C., Galletta, A., Member, S. and Carnevale, L. (2017) An IoT Cloud System for Traffic Monitoring and Vehicular Accidents Prevention Based on Mobile Sensor Data Processing. IEEE Sensors Journal, 99.
 Das, A., Dash, P. and Mishra, B.K. (2018) An Innovation Model for Smart Traffic Management System Using Internet of Things (IoT). In: Sangaiah, A., Thangavelu, A. and Meenakshi, S.V., Eds., Cognitive Computing for Big Data Systems Over IoT, Volume 14, Springer, Cham, 355-370.