The German transport minister will be laying down legal guidelines for the use of driverless cars on the country’s autobahns.

Alexander Dobrindt said driverless or robot cars would probably become a feature on German roads within a few years, but insisted that some rules needed to be in place first.

He has created a committee including figures from research, industry and politics, to draw up a legal framework that would make it permissible and would like a draft of key points to be ready before the Frankfurt car fair in September.

Current rules do not allow self-drive or robot cars on German roads, because a human being always has to be at the controls, according to the 1968 Vienna Convention on Road Traffic to which Germany is signed up, along with 72 other countries.

Questions to be clarified include who would be responsible when the car’s computer fails causing an accident, how is a robot car is to be insured and how licences should be regulated?

A few days ago Dobrindt announced he was designating a stretch of Germany’s busy A9 autobahn in Bavaria for testing robot car prototypes.

The German car industry has been working on driverless cars for years and expects the first commercially available models to be introduced by 2020.

But the industry has become nervous about competing technology from Google, leading to a campaign within industry and politics in Germany to remain independent but ahead of the field. Nevertheless, the competition appears to be keeping everyone in the industry on their toes.

In 2014 German carmaker Mercedes Benz presented its Future Truck 2025, a driverless vehicle which can reach speeds of up to 80kph (50mph), while the Audi prototype, the so-called RS7 which has a horsepower of 560, reached speeds of almost 240kph (150mph) when tested on Formula One’s Hockenheim track.