V2V works by using a type of Wi-Fi to communicate. It communicates the car's speed, direction, steering position, amount of braking to the cars around it. The other cars then process the information and warn the driver with a light, sound, or vibration if it thinks a crash is imminent.
These system are still in development, but have significant pros and cons compared to the systems we have already discussed. Some of the pros:
Because the systems use wifi, the cars to have a greater range than other systems. It also allows to see through obstacles, including around blind corners and through other vehicles. With the camera and laser based systems, they can only see the first obstacle. V2V offers a much greater view of the car's surroundings. It also isn't hindered by weather like the other systems.
The biggest one, and it is a big one, is that it requires other vehicles to have the same system. The goal of this system is to have everything on the road connected to a network to create a detailed map of the vehicle's surroundings. If only a few cars have V2V, that map will be very limited in its accuracy of the actual situation. They are also slightly less accurate than the other systems. These systems can also only offer warnings. While V2V systems are not hindered by weather, they can be inhibited by urban canyons (roads lined with skyscrapers) and poor GPS signal. Another worry is privacy, since there systems do share you location.
However, V2V can work with the other systems to maximize the safety capabilities.
While some of the other systems can also detect cyclists and pedestrians with cameras and lasers, V2V can also do it with the same advantages over the other systems that it has with cars. Because V2V is based off of wireless signals, it can connect with cellphones so pedestrians and cyclists can share their information with other vehicles.
V2V systems allow drivers to know more about their surroundings sooner than current systems. However, since it requires nearly universal adoption to be effective and is still in development, it will be a while before it can start saving lives.
How do you think V2V systems will start to be implemented, since they seem more dangerous in the first few years? Also, do you think that using cell phones for interfacing is an invasion of privacy?
ReplyDeleteSince they are still being tested, it will probably be at least 2 years before they start showing up on new cars. The government is thinking of making them required on all new cars, but if that were to happen, it wouldn't be for probably at least 5 years. Even then, the percent of cars on the road with the system would be nearly negligible. There will probably be add on systems for older cars, but those are unlikely to be required by law, and therefore won't be widely used. Privacy is a big issue with V2V, since it constantly monitors your location. However, I would speculate that if it was done with a cellphone, the user would have the option to turn it on or off.
DeleteHey Mac, I've actually read up on V2V networks previously and it's great to see a blog post about V2V! Just a question about V2V: as far as I have seen, V2V networks just require sensory data and a connection protocol (like 802.11 Wifi). Can't car manufacturers simply retrofit wifi modules and sensors onto existing cars to add them to the V2V networks?
ReplyDeleteIf it is coming from the manufacture, it will most likely be only on new cars. But older cars could easily be retrofitted with a small box that connects to the car and has GPS. Or, even easier, a cell phone could be used for a basic version of V2V. Since most modern phones have GPS, they could monitor the location and speed of the car and communicate it with other cars. However, a cellphone may not be able to know more specific things about the car, such as amount of braking or how much traction the tires have (to warn other cars of black ice for example). But in the future, cars and phones may be more interconnected, the phones might know that stuff.
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