如果车对车或车对基建站点的通讯能在未来实现，那么必将产生海量的交通与路况信息。信息技术公司与汽车公司认为其中一部分信息将蕴含极高的潜在价值，但究竟哪些信息有价值目前尚不清楚。

专家普遍预测，车对车（V2V）/车对基础设施（V2X）技术将成为所有车辆的强制配置要求，因为它在提高安全方面可以起到重要作用。届时，所有车辆都将传送车速、方向及其他信息。传送信息的主要目的是安全保障，但如此庞大的实时信息必然也能用于其他目的。

“积累交叉路口和高速公路上的信息，具有非常重要的价值，”丰田汽车工程与生产公司集成汽车系统部门的Hideki Hada表示。“像实时交通状况这样的信息，你可以收集几十亿条数据。有些人通过收集数据就能赚一大笔钱。”

目前，手机信号已被用于收集实时交通信息。但是让大部分汽车都具备V2X传送器，还需等待多年，在此之前，这一技术概念也会获得极大的发展。尽管如此，IT公司已经开始思考如何建造收集交通数据的大型系统。因此，不会出现一种应用独大的情况，更可能出现的局面是多种使用模式并存。

“我们在汽车互联方面进行了巨额投资，这是我们的云服务战略的一部分” IBM智能交通解决方案架构师Richard Nash表示。“我们探讨了多种想法，尝试了各种领域中的应用模式。在某些领域里，可以收集大量数据，但最重要的是需要从中筛选出4-5个有商业价值的内容。”

在消费领域中用于分析趋势的大数据技术，可以用来筛选汽车所发送的信息。如果V2V真正成为汽车中的标配设施，那么分析所需的数据供应自然会非常充足。

“大数据技术的核心就是海底捞针，”Xerox技术、政策与战略部门高级主管Joe Averkamp表示。“大部分数据很无趣。数据量很快能达到拍字节（Petabytes）的规模，甚至d进入艾字节(Exabytes)的时代。”

作者：Terry Costlow

来源：SAE《汽车工程杂志》

翻译：SAE上海办公室

Searching for V2V's hidden data

If vehicles eventually talk to each other and to infrastructure stations as expected, there’s going to be a ton of data about traffic and road conditions. Information technology and automotive companies feel that some of this information has a lot of potential value, though what exactly it’s good for remains uncertain.

It’s widely predicted that vehicle-to-vehicle/-infrastructure (V2X) technology will be required on all vehicles due to its significant role in improving safety. If that occurs, all vehicles will eventually transmit their speed, direction, and other information. These transmissions are mainly for safety, but the wealth of real-time information will undoubtedly be useful for something else.

“There’s real value in accumulating data at intersections and on the freeway,” said Hideki Hada of Toyota Motor Engineering & Manufacturing’s Integrated Vehicle Systems Dept. “You can collect billions of pieces of data for things like real-time traffic information. Somebody will make good money by aggregating data.”

However, cellular signals are already being used for real-time traffic information. That concept will undoubtedly improve vastly in the years it will take before a large percentage of vehicles have V2X transmitters. Still, IT companies are already exploring ideas that will help them justify building large systems that focus on transportation data. There may not be one killer application for data, but many minor usage models may exist.

“We’re making huge investments into connected cars as part of our cloud services strategy,” said Richard Nash, Solution Architect for Intelligent Transport at IBM. “We’re trying to string together different ideas to see where there are use cases in various domains. In some areas, they’ll be collecting enormous amounts of data. The trick is to sift through it to find the four or five items that have some business benefits.”

The big-data techniques used to analyze trends in consumer fields can be used to glean useful information from data sent by cars. If V2V does become a standard feature, there will be no shortage of data to analyze.

“Big data plays are all about finding the needle in the haystack,” said Joe Averkamp, Senior Director, Technology, Policy & Strategy, at Xerox. “A lot of the data is just not interesting. You quickly get up to petabytes and start talking about exabytes.”

Author: Terry Costlow

Source: SAE Automotive Engineering Magazine