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PressClub United Kingdom · Article.

When cars talk to each other.

Car-to-x – the communication platform of the future.

Motorcycle Technology
·
Driver Assistance Systems
·
BMW ConnectedDrive
·
Technology, Research & Development

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BMW Group

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Note: This press release is a 1:1 copy of the original issued by BMW headquarters in Germany. No adaptations have been made to cater for the UK market.

 

The key to intelligent driving, which is synonymous with energy-efficient and safe driving, is forward thinking. To help drivers plan ahead, vehicles from the BMW Group are already fitted with a large number of sensors designed to improve safety, comfort and efficiency. Often, however, these sensors have only a limited predictive capability or “horizon”. “Car-to-x” communication extends this horizon significantly, and will in future allow drivers to “see” long distances ahead, into areas currently hidden from view, and even around not just one but many corners.

Car-to-x communication means electronic networking of vehicles and roadside infrastructure, with the aim of exchanging information directly both between road users and between road users and roadside infrastructure such as traffic lights. Car-to-x communication is a comprehensive communication network which any road user can take part in.

Car-to-x communication usually operates via WLAN or mobile phone connections. For standard automotive application, car-to-x communication at present uses high-speed WLAN networking based on the high-frequency WLAN IEEE802.11p/ G5A standard, which is designed to allow real-time communication. The protocol allows large numbers of participants to communicate simultaneously without interference. At the same time the performance of mobile phone networks is improving steadily, with an increase in bandwidth and a reduction in data lag – the so-called latency times. Therefore, this type of medium, too, is becoming increasingly important for car-to-car communication, for example as a complement to direct communication via WLAN.

 

Connectivity brings added value.

Integrated and connected vehicle functions are nothing new within the BMW Group. Connectivity for infotainment applications already made its debut in the 1990s with BMW ConnectedDrive. For some years, the focus of development work in the BMW Group has been shifting increasingly towards integrated and connected comfort and, in particular, safety functions. Here, car-to-x communication opens up completely new potential. In the event of a hazard, extensive connectivity between vehicles allows oncoming and following traffic to be given advance warning of potential dangers, and therefore to react appropriately and in good time. But warnings are only one possible use of this communication platform. Since infrastructure data, too – for example about traffic light phases – can be integrated into this communication system, information is available which allows drivers to easily adapt their driving style for even greater efficiency, thereby significantly reducing vehicle emissions. This technology therefore offers new solutions not only for proactive safety and accident prevention but also for intelligent energy management.

“The more information I have about the rest of my journey – for example, if I know in advance when traffic lights will change, or if I know that an accident has just happened further along the route – the more promptly I can react, which means I have less stress and can either avoid hazardous situations altogether or at least reduce the risk.” (Karl-Ernst Steinberg, Head of Information and Communication Technologies at BMW Group Research and Technology).

In combination with existing vehicle sensors, car-to-x communication provides a valuable starting point or enhancement for a wide range of BMW ConnectedDrive driver assistance and information systems of the future. These technologies, combined with the driver’s own input, create an extremely high-performance macrosystem capable of ensuring a safe and efficient journey from start to finish.

 

Please find further information in the attached press kit.

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Fuel consumption figures based on the EU test cycle, may vary depending on the tyre format specified. Further information on official fuel consumption figures, specific CO2 emission values and the electric power consumption of new passenger cars is included in the “Guideline for fuel consumption, CO2 emissions and electric power consumption of new passenger cars", which can be obtained from dealerships and here as PDF.

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