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rick merritt
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Re: Interesting article
rick merritt   8/27/2013 8:56:22 PM
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Better traffic control and accident avoidance sound like two great apps for this technology. I'd love to see what the infrastucture network would look like.

junko.yoshida
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Re: Interesting article
junko.yoshida   8/27/2013 6:20:58 PM
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Thanks for the cool video, Andrzej11. 

It explains why we need V2I very well.

But here's the thing. 

It was late 1999 when FCC allocated 75MHz of spectrum in the 5.9GHz band for DSRC -- dedicated short-range communication for V2V and V2I. Carmakers, even though fully aware of the importance of the V2V and V2I more than a decade. have been sitting on that spectrum for more than a decade.

I don't think I am the only skeptic in the world if this whole transportation infrastructure thing will ever take off in the U.S.

Andrzej11
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Re: Interesting article
Andrzej11   8/27/2013 1:23:14 PM
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@Junko

You ask, "Then, do we even need V2V or V2I? If every car gets so smart after all, what's the point of V2V and V2I?"

The answer to your first question is of course and to better answer your second question I would suggest you watch this video, http://www.youtube.com/watch?v=4pbAI40dK0A . High volume intersection control for autonomous vehicles would require V2I while you could get away with V2V for low volume intersections.

bk11
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Re: Bad drivers come in all shapes and sizes
bk11   8/27/2013 1:10:39 PM
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"self-driving cars could be counted on to avoid an accident and make way without any fuss."

Until someone figures out how to reprogram it to be more aggressive.  I'd give it about 30 minutes after the first one hits the road...

junko.yoshida
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Re: Metcalfe's law was already manifested in cars
junko.yoshida   8/27/2013 10:24:53 AM
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p_g, thanks for your explanation. Understood, and it makes sense.

p_g
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Re: Metcalfe's law was already manifested in cars
p_g   8/27/2013 6:04:01 AM
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Junko,

 

if you see today's sensor/radar give you feature that help in driving or makes driving easy but they still dont take over responsibility of driver. They work in congunction with driver. Reason being the data from these sensor is patial and tough to process. Also its very compute intensive + required very sophisticated AI software to give accurate environmental information. Sensors are popular today since they dont need infrastructure changes to work. I guess thats the best you can achieve from them. Like Adaptive cruse cannot detect if lane is turning and car ahead is in same lane or alternate lane. This information need camera view to complete this information, which make system even complicated and error prone.

 

All this can be simplified with V2x system and its more guranteed read of enviornmeet for self driven and doesn't need much post processing also.

p_g
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Re: Interesting article
p_g   8/27/2013 5:54:11 AM
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I dont think so. If by 2030 we are expecting self drivern car then thae path to hit that stage will go though V2x cars. I dont think google car will turn into reality straight. AI is still not at the stage where they can create intelligence of 6 months old baby, for self driver car without V2x assist features is bit of long shot.

 

I believe if self driven car happen they will be self driven using special driving lanes where every step is guided by V2x communication channel. Thats more reliable means of reading neighborhood that using camera's e.t.c and processing image to infer the nearby environment.

p_g
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Re: Glad for my Ford escape
p_g   8/27/2013 5:44:25 AM
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Unless we define standard communication protocol which is used by every car maker. Then brand name wont make any difference...

junko.yoshida
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Re: Metcalfe's law was already manifested in cars
junko.yoshida   8/26/2013 5:49:49 PM
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Bert, I agree with your assertion:

 And vehicle to vehicle and to infrastructure comms are imperative for fully autonomous operation,


But when you think about using technologies such as sensors, radars and others that are already available today (in Advance Driver Assitance System) combined with LTE cellular network connection, for example, do we really need V2X? Am I off base to imagine that we can actually get to close to what self-driving cars need without V2X? 

junko.yoshida
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Re: Interesting article
junko.yoshida   8/26/2013 5:44:09 PM
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I think you are absolutely right, @smallplanetmatt. 

I do realize the great value in V2X. My question, though, is that the concept of V2X is great, but seriously, how long will it take for that to become a reality? In the United States, especially, I think it could take 20-30 years...

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