# V2X-Based Highly Reliable Warning System for Emergency Vehicles
###### Abstract  
Vehicle-to-everything (V2X) in networks is a communication technology that allows vehicles to communicate with their surroundings. Traffic congestion and unawareness of the travel of emergency vehicles (EVs) lead to delays in reaching the destination of the EV. In order to overcome this time delay, we propose a jitter-to-highly reliable (J2H) approach of customizing the traffic signals and an alert passer mechanism to alert other vehicles. Once an EV is started, its source, destination and level of emergency will be updated on the network, and based on the traffic density, the fastest route to reach the destination is determined. The V2X system in the J2H approach passes an alert to all the traffic signals on that route. The traffic signals will continuously monitor the position of the vehicle by using the Global Positioning System (GPS). Based on the position of the vehicle, the distance between the vehicle and the traffic signal on that route is periodically updated. Once the vehicle comes within the range of the closest traffic signal, based on constraints such as number of lanes, emergency level, types of roads, traffic density, number of EVs approaching, and time of arrival of the vehicles, the traffic signal will be customized. The V2X then passes the information to all the traffic signals that are available in the route of the EV. The alert passer mechanism warns about the approaching EV to other vehicles on that route. Thus, by adapting the J2H technique, EVs can overcome the time delay to reach the destination. Traffic congestion is overcome by customizing the traffic signals. Path blockage can be cleared by vehicle-to-vehicle (V2V) communication. V2V; emergency vehicles; GPS; traffic density; traffic congestion Article V2X-Based Highly Reliable Warning System for Emergency Vehicles  
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etc. [6; 7; 8]. By knowing the traffic information in advance using V2X, the vehicle can reach the destination easily [9]. Using 5G, V2X performance will increase by supporting mobile network operators due to the dynamic network's availability [7]. It also has advantages such as longer range, low latency, high reliability, high throughput, wide-band ranging, and positioning. Traffic congestion arises when the demand for roads exceeds its capacity. Traffic congestion often occurs in urban areas [10]. It will be even worse in peak hours in cities, as all are traveling to their workplace and schools. Governments have taken many control measures such as increasing public transportation, an odd-even license plate policy, and vehicle restrictions on several roads. However, all these measures are ineffective. Traffic congestion not only increases vehicle accidents but also increases emergency vehicle (EV) response time [11; 12; 13; 14; 15]. EVs play a crucial role in saving lives. When it comes to ambulances, it helps to reach the hospital in time, thus saving lives [15; 16]. Likewise, fire engines help in rescuing people in buildings on fire, also saving lives. EVs need to make a quick trip to arrive to their objective to spare lives [17; 18]. The cycle may become troublesome when the EVs stall out in rush hour gridlock or when different vehicles do not perceive the methodology of the EV. If the EV does not arrive to their objective at the right time, it might prompt life dangers. Likewise, non-EVs may be slammed because of quick-moving EVs [19]. To overcome such accidents, we use secure V2V communication to alert non-EVs about the approaching EV. In the event that different vehicles know about the EV's maneuver and if there is less traffic at the signals, the EVs can arrive to their objective on schedule. Since reaching the destination on time, it becomes much easier to save lives compared to reaching the destination later [20; 21]. As the EV has traffic rule exemptions, it can pass through red lights, which increases the probability of accidents during heavy traffic [22; 23].