Imagine a vehicle that warns its driver about a collision risk before it becomes a reality or an emergency vehicle like ambulance automatically receives green signals along their route. Also if the electric vehicles communicate with the grid to optimize charging and energy distribution.

This is not science fiction it is the emerging reality enabled by Connected Vehicles and Vehicle-to-Everything (V2X) communication.

Because it is usually fatal, road safety continues to be one of the most important global issues. The World Health Organization (WHO) estimates that millions of people are injured and 1.19 million people die in traffic accidents each year. Over 150,000 road deaths are reported annually in India alone, mostly as a result of poor infrastructure, slow reaction times, and a lack of situational awareness.

These issues are resolved by connected car technology, which turns transportation into an intelligent, well-coordinated system by allowing cars to interact and communicate in real time.

Evolution from Standalone Vehicles to Connected Mobility

Conventional automobiles are self-contained mechanical systems that only use on-board sensors and driver perception and only manually dependent. On the other hand, connected cars function as smart nodes in a broader digital ecosystem.

This ecosystem is enabled by Vehicle-to-Everything (V2X) communication, which includes:

• Vehicle-to-Vehicle (V2V): Exchange of information of ones vehicle with another like speed, location, and braking information
• Vehicle-to-Infrastructure (V2I): Interaction with traffic lights, toll systems, and road sensors
• Vehicle-to-Pedestrian (V2P): Communication with smartphones and wearable technology
• Vehicle-to-Cloud (V2C): Used for Software updates, analytics, and remote diagnostics
• Vehicle-to-Grid (V2G): Exchange of energy between electric vehicles and power infrastructure

Using real-time traffic and environmental data, these communication channels enable cars to make well-informed decisions.

Industry Growth and Market Expansion

As there is a growth in the embedded systems, telecommunications, and electric mobility, the connected vehicle market is growing quickly.

According to the estimates, the growing demand for safety, automation, and connectivity will propel the global connected car market to surpass USD 250 billion by 2030.Government is also investing in smart transportation infrastructure, growing semiconductor industry, and the extensive rollout of 5G networks all contribute to this growth.

Fig. Connected Car market growth projection

Automakers are moving toward software-defined cars that can communicate with other systems, send and receive updates, and transmit data.

Technical Architecture of V2X Systems

Communication networks like CAN or communication via sensors and integrated embedded systems are essential for V2X communication.

OBUs (on-board units)

They serve as the communication controller for the car. They are connected to various modules like telematics, sensors, and electronic control units (ECUs) in vehicles which is the heart of the vehicle. OBUs oversee authentication and secure data transfer.

RSUs (roadside units)

RSUs are positioned at intersections and alongside roadways. They gather and send infrastructure information, hazard alerts and traffic data to automobiles.

Technologies of Communication

V2X is made possible by two key communication technologies:

• Dedicated Short-Range Communication (DSRC): Offers safety applications low-latency communication.
• Cellular V2X (C-V2X): Provides greater coverage and scalability using LTE and 5G networks.

Near real-time vehicle coordination is made possible by 5G technology, which greatly improves communication speed and dependability.

Safety Benefits and Accident Prevention

Conventional safety systems in the vehicles uses onboard sensors with limited visibility and range, like radar and cameras. Since over 90% of traffic accidents all over the world are caused by human error, proactive safety systems are crucial. V2X improves safety by allowing the vehicles to communicate in real time beyond the limitations of physical sensors.

Among the examples are:

• Forward collision warning

• Blind intersection alerts

• Emergency braking notifications

• Hazard warnings beyond line-of-sight

According to research on transportation safety, V2X systems may be able to prevent or lessen up to 80% of collisions brought on by poor driver awareness.

The graph illustrates the potential impact of Vehicle-to-Everything (V2X) Communications to reduce the number of fatalities on the road over time throughout the world. Currently, the fatality rate worldwide is about 1.19 million deaths per year per the World Health Organization (WHO). As V2X is implemented and adopted, the overall accident rates will continue to decline over time; however, it will be tedious process. This will occur because of the ability for vehicles and infrastructure to communicate in real-time allowing for advance warning of hazards, synchronization of braking, and improved awareness of what is going on around the vehicle. V2X allows the driver use of situational awareness beyond the line of sight, thereby, allowing the driver to avoid a collision when there is limited visibility or delays in responses. As V2X is introduced to the 5G wireless network and Intelligent Transportation Systems, V2X is expected to play an important role in improving global road safety. This functionality will greatly reduce the severity of accidents and significantly increase road safety. Electric Vehicles and Energy Integration

Connectivity is an important benefit of Electric Vehicles (EVs) with regards to Vehicle-to-Grid (V2G) communications, which allows two-way communication or information sharing between electric vehicles and electrical grids. Instead of just consuming energy, connected EVs can provide storage for additional amounts of renewable energy. Connected EVs can also provide electricity back to the grid during times of high demand in order to help support stability (e.g., preventing blackouts or surging). The ability of connected electric vehicles to return energy back to the electrical grid also helps provide a more reliable supply of energy during high-demand periods. In addition, connectivity enables EVs to charge intelligently and more efficiently. EVs can communicate with all-grid systems and charging stations so that they can charge during non-peak hours when electricity usage is at its lowest, and prices for electricity are lower. Thus, the EV owner will experience lower energy costs. Furthermore, EV batteries can act as a storage medium for additional renewable energy generated when energy

demand is low. With more than 10 million EVs sold each year globally, connected EVs can be viewed as a large distributed energy resource (DER) from their aggregate storage capacities’ integration with the wider utility system promotes increased use of renewable energy sources, improves overall energy efficiency, and builds a more robust and sustainable energy ecosystem.

Cybersecurity Considerations

Continuous communication is key for connected vehicles to operate safely and securely. Cybersecurity is therefore vital to ensure that vehicles can operate as intended, as threats and risks could easily arise if not properly protected. Some examples of such threats/risks could include having an unauthorized person gain access to vehicle systems or receiving an erroneous message containing false information. Disruption in communication – such as a denial-of- service attack – may also prevent safety-critical messages from being delivered to the vehicles when they are needed. Security methods that provide protection against these possible threats/risks include the use of encryption to protect data in use, the use of authentication protocols to validate trusted devices, and the use of secure hardware modules to protect sensitive information. Strong cybersecurity efforts are critical for ensuring reliable communications; protecting the operation of vehicles; and providing customers with confidence in the entire connected and automated mobility ecosystem.

Semiconductors and embedded systems

Connected vehicles and V2X communication rely on semiconductor technology and embedded system components to connect and deliver data in real-time. All new platforms feature automotive process or chips designed to enable real-time data processing, allowing a vehicle to assess and act on data from its sensor, the infrastructure around it, and other vehicles as quickly as possible. New automotive processors also provide capability for secure communication through the integration of security functionality that protects against the unauthorized access and exchange of data between vehicles. In addition to processing data from multiple sensor technologies (radar, camera, LiDAR) for environmental monitoring and other purposes, many of today’s advanced chip types have built-in support for Artificial Intelligence- based decision making. AI-based decision making allows vehicles to recognise potential hazards, predict traffic conditions, and support autonomous driving functions. Automotive processors are designed and optimised for high-performance, low-power consumption, and reliability in extreme automotive environments. In addition to providing fast and stable communication through automotive communication interfaces such as Controller Area Network (CAN), Automotive Ethernet, and wireless V2X modules, embedded systems coordinate all the electronic functions in a vehicle; therefore, embedded systems are essential for ensuring safety and efficiency while operating a vehicle. As connected autonomous mobility continues to grow and change, semiconductors and embedded platforms will continue to form the foundation for enabling all forms of intelligent, secure, and dependable vehicle communications systems.

Conclusion

The emergence of connected vehicles and vehicle-to-everything (V2X) communication will create a paradigm shift in automotive technology. By creating a safe and effective way to manage transportation needs without loss of human life, these two technologies present an opportunity to improve the safety of everyone on this planet, given that more than 1 million fatalities occur each year due to road traffic incidents worldwide. Real-time communication will also provide vehicles with the ability to communicate with each other, as well as with infrastructure and networks, thus allowing them to identify and react more quickly to dangerous situations caused by distractions. In turn, this will facilitate improved traffic flow, less traffic incidents, and support the development of autonomous/electric vehicles. Additionally, as advancements continue to occur with semiconductor devices, embedded devices and communication devices, the connected vehicle will serve as the foundation of intelligent transportation systems. By creating a connected, cooperative ecosystem of intelligent vehicles, future generations will have access to much safer and more intelligent mobility.