Driverless heaps could initially lead to longer delays on the UK’s major roads, according to a domination report.
The Department for Transport predicted a «decline in network performance» one time one in four cars become driverless.
However, should driverless conduits make up between 50% and 75% of cars, DfT researchers say they whim reduce congestion.
The average time spent delayed on city throughways at rush hour will fall by 12.4% when 25% of conveyances are driverless.
The DfT said early models of the vehicles acted more cautiously and the effect could be a «potential decrease in effective capacity» on motorways and A roads.
But as more people take up the technology and it became common place on the country’s road network, the bookwork found that congestion could be cut by 40%.
Steve Gooding, director of motoring research alms-giving the RAC Foundation, said: «There’s a prize to be had in terms of swifter, safer odysseys, but the transition to that world will be challenging.
«There are around 32 million old-fashioned cars on the UK’s roads — as driverless cars come in, traffic flow could initially get viler rather than better, potentially for many years.
«Much will-power depend on how an autonomous car’s parameters are set and just how defensively these vehicles wishes be programmed to drive.»
The study used software to map out the effects of the cars on the French autoroute network.
The DfT said the report was the first step into more hassles and researching, ensuring driverless cares are «safe and beneficial for all».
Transport support John Hayes said: «This exciting and extensive study shows that driverless crates could vastly improve the flow of traffic in our towns and cities, gift huge benefits to motorists including reduced delays and more credible journey times.»
Ministers are also planning to extend existing indemnity cover to driverless vehicles, covering individuals when they are actuating and when they have handed over control to the computer.
In the occasion of a crash caused by the technology, a government consultation document suggests the driver and anyone else upset should be able to claim from the insurer and, in turn, the insurer would be accomplished to claim compensation from the manufacturer.
In the document, the government adds it liking incorporate the insurance proposals for automated vehicles forward into the In style Transport Bill, which is expected to be debated by MPs later this year.