Saturday, 8 February 2014

Smart traffic control



One of the biggest safety and traffic flow technologies coming is vehicle-to-vehicle (V2V) communication. The National Highway Traffic Safety Administration (NHTSA) announced that it is beginning to take steps to enable V2V technology for light vehicles. It allows vehicles to communicate information about their speed, conditions, and surroundings. The technology currently being used in testing utilizes Dedicated Short Range Communications, or DSRC. It works in the 5.9 GHZ range with bandwidth of 75 MHz and a range of about 1000 meters (.62 miles). That’s certainly far enough to warn of accidents, road hazards, slower traffic flow and even pedestrians, traffic signals and crosswalks. It’s amazing, creating a sort of living mind on the roads. The implications are huge. Coupled with technologies like adaptive cruise control, it could even help adjust speeds between cars to make traffic flow much faster on freeways and highways. And more fuel efficient. The icing on this cake is a potential 81% lower accident rate. That means less injuries, less fatalities and lower insurance rates. Airbags, seat belts and ABS are all great, but not getting into an accident in the first place is even better.

In 2012, the DOT conducted a test using 3000 connected vehicles (cars, trucks and buses). The vehicles were able to send and receive anonymous safety data between one another, and they were able to communicate warnings to drivers in cases of possible crashes. This technology will be even more useful when it rolls out in larger numbers of new vehicles. The average vehicle on the road is 11 years old, meaning that it will take a years to reach critical mass to make it truly effective. There is talk of using smartphone apps to assist in this, though they would have to be coupled to another device in the car. GM has been experimenting with transponders. Possibly in the same way you can currently add a bluetooth speaker to your car to work with your phone in cars that don’t have it built in, you could have a device that does much the same for V2V, working with your smartphone (or without). It’s doubtful that could all be built in to your smartphone, as that adds a whole new radio. Think bigger, heavier phone with more battery drain. And unnecessary for anyone who doesn’t drive.

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