Self-driving cars — an idea that could improve fuel efficiency, travel time and safety for all cars on the road, even in small numbers — will be tested on roads near Nashville, Tennessee, later this year. Benedetto Piccoli and colleagues at Rutgers University in New Jersey previously used a computer model of a simple circular road with only one lane in each direction and found (PDF) that self-driving cars can reduce overall fuel consumption by 40 percent for all traffic, even for all vehicles The proportion of autonomous vehicles in China is only 5%. The best-case scenarios for these new models “rarely occur” in the real world, he said, but his team still hopes to reduce fuel consumption by 10 percent for all vehicles on the road — not just driverless cars — during the trial. “If you’re looking at the overall cost of a country’s transportation system, you can save billions of dollars by even reducing it by 5 percent,” he said.
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