When Will the Automotive Internet Arrive? 261
DeviceGuru writes "European researchers are developing a cooperative traffic system, known CVIS (Cooperative Vehicle-Infrastructure Systems), comprised of vehicle-, roadside-, and central infrastructure-based communications hardware and software, including vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) wireless. Among other capabilities, cars communicate with each other and with 'smart traffic signals' to smooth the flow of traffic and avoid accidents, or with 'smart traffic signs' to avoid dangerous driving conditions. The CVIS project is in the midst of undergoing field trials in Europe, and Audi has recently deployed 15 test vehicles in a similar project. The ambitious vision of intelligent transportation systems (ITS) includes goals such as reduced traffic congestion and fuel consumption, enhanced safety, and improved driver and passenger comfort. Ultimately, the developers envision a sort of Automotive Internet."
Vorsprung durch Technik (Score:2, Informative)
Re:IPV6 (Score:4, Informative)
They use IPV6 and linux.
In CVIS, the standard network protocol for 2G/3G communication is IPv6 (Internet Protocol version 6). In case no native IPv6 is available via 2G/3G, IPv6-over-IPv4 tunnelling can be accomplished via a CVIS-specific tunnel device driver and some sort of tunnelling software like OpenVPN.
The Operating System is the key foundation of the CVIS platform. The choice of operating system fundamentally affects portability, stability and extendibility of the whole CVIS system. Linux was chosen as it is freely available, has good quality, industry-standard development
tools and its license arrangements require access to source code.
Quotes from http://www.cvisproject.org/download/ERT_CVIS_FinalProject_Bro_06_WEB.pdf (page 10 and 11)
Re:Cost effective? (Score:4, Informative)
Re:Cost effective? (Score:4, Informative)
The link you provided shows that cars use more BTUs per passenger mile than anything but two light rail systems. Other mass transit systems (bus, jet, commuter train, etc.) all beat the automobile. Usually one provides links to buttress one's argument, or am I just too old-fashioned? (already know the answer...)
Re:Don't need to have every car! Brilliant (Score:4, Informative)
Actually the right lane is the default lane and the left lane is for passing. If you aren't passing anyone or preparing for a left exit you shouldn't be in the left lane. It is a violation to do otherwise.
Re:Hopefully Never (Score:3, Informative)
It doesn't give you more in the city - it may give you more compared to other cars
This only proves that you don't own a Prius; perhaps those who own one know better? Prius does have a better fuel efficiency in dense, slow traffic. You can easily see 100 mpg bars on the meter, and that is because the car is running only on electric power. I saw one such bar just yesterday; typically if the traffic is bad the efficiency is about 70-75 mpg. The purely electric drive is limited to speeds up to 42 mph.
The Prius is crap compared to some old cars too - the citroen AX diesel could hit 100mpg... why can't we do at least similar now?
There are cars built by enthusiasts who are incredibly light and efficient. They are also impractical because they can't carry anything and accelerate like a snail. Prius is popular because it offers great fuel economy and at the same time is a medium size car that has plenty of power for 99% of users.
Re:Hopefully Never (Score:3, Informative)
Actually, it gives better in the city because over the same distance it encounters much less air resistance (and regenerative braking works great).
Air drag increases with the cube of speed: [wikipedia.org], so doubling the speed (from, say 30 mph to 60 mph) results in (1*2) cubed , or 8x the energy (double the speed, then cube it).
So you should get WAY better mileage in a Prius in the city.
Re:Hopefully Never (Score:3, Informative)
Yes, as your engine is running, its sucking in air. For every 14.7 units of air it sucks in, it will add 1 unit of fuel. At altitude, there is less dense air, so less air (by mass) is making it into the engine - meaning that less fuel is being added as well. Less power, but less fuel usage.
A prius's electric engine will not be degraded by altitude at all.