Scientists firmly believe that self-driving cars will significantly help reduce carbon emissions that have been blamed for causing global warming. The idea of robotic vehicles yet remains to be realized, but if issues related to it, like close calls on the road, are sorted out, a part of the solution will definitely be provided to address a global problem.

According to studies, the use of autonomous or self-driving electric taxis will reduce emissions per mile by 94% in 2030. With a standard gasoline vehicle of today, it's almost impossible to achieve that level to limit heat-trapping emissions, said researchers at the Lawrence Berkeley National Laboratory.

Researcher Jeffrey Greenblatt says correct size of taxis for the trip will contribute to most of the savings. He says, "Most trips in the U. S. are taken singly, meaning one- or two-seat cars would satisfy most trips."

Austin Brown, a researcher with the National Renewable Energy Laboratory, said the emerging field of automated vehicle is very exciting and holds great promise to reduce carbon emissions from vehicles.

These vehicles will be electric ones and will be powered from an increasingly renewable energy source. Also, these vehicles will be capable of travelling more miles per year, which means more miles will be clean-powered.

Researchers have to say that by 2030, autonomous taxis will be much cleaner than current cars. These cars will also be smaller in size to save energy and will provide additional efficiency gains.