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31 May 2024 What is DSRC: Understanding dedicated short range communication technology
What is DSRC technology?
Direct short-range communications (DSRC) technology is essentially a wireless technology that allows nearby vehicles to directly communicate with one another, as well as with the surrounding infrastructure, without the need for a cellular network. The wireless network provides secure and reliable information transmission, operating within a 30 MHz band according to European DSRC standards.
Due to its short range, the technology experiences little interference, making it ideal for fast-moving vehicles. It has 3 operating modes: vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) communication, and communication between the vehicle and all connected vehicles and devices in the surrounding area (V2X). V2V communication primarily improves road safety by warning others of potential obstacles and collisions. V2X includes all of the above and may also be able to communicate with pedestrians’ smartphones.
For example, it may notify a driver that they need to slow down because a vehicle ahead is braking or let them know when out-of-sight vehicles are rapidly approaching. One of the main advantages of this technology is that it is able to detect dangers quicker and from further away than radars and cameras. It can also “see” past corners and through vehicles.
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V2I communication also prevents crashes and is particularly critical for autonomous and semi-autonomous vehicles. By communicating with surrounding traffic infrastructure, it enables the vehicle to detect pedestrian crossings and traffic lights, congestion levels, bridge clearance, and so on.
How does the DSRC system work in connected cars?
Devices are installed onto vehicles that use short range radio frequencies to communicate with surrounding devices. These communications devices may be internal or external, such as a specialised DSRC car antenna. Most of them have a range of roughly 300 metres.
Cars using this system transmit information, including their exact location, speed and direction, every 10 seconds to every vehicle or device in the vicinity. This data is then deciphered and used for notifications and actions, including Left Turn Assistance, Cooperative Awareness Messages, and Basic Safety Messages.
The car battery and alternator are responsible for powering the vehicle’s electronic devices and systems. It is therefore important to ensure that both the power components are well maintained to ensure that the safety systems function properly.
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What are the advantages of DSRC technology?
According to the World Health Organisation, road accidents are the top cause of deaths for the people ages 15-35 globally. Technologies such as this are designed and implemented to minimise these preventable deaths and serious collisions by reducing both human and technological errors.
Not only do they increase safety, but they also aim to reduce congestion, which, in turn, helps to lower emissions caused by road traffic and therefore protects the environment and your personal health. This is a particularly important issue for drivers in large, densely populated areas.
How does it compare with C-V2X?
Unlike its newer cellular counterpart, C-V2X, DSRC technology has been widely available for a number of years now and has proven to be effective. However, C-V2X and LTE compatible devices may outperform DSRC systems in certain areas, supposedly offering a greater bandwidth, increased cybersecurity, and opportunities to decentralise the network using private infrastructure and thereby decrease the government’s maintenance costs.
If you’re looking car parts or gadgets to improve your car’s connectivity, you can find the best deals online. To find products compatible with your vehicle simply search using keywords, e.g. BMW antenna, or by entering specific data such as the VIN.
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