A revolution that’s still taking shape

For years, technological advances have allowed drivers to enjoy a safer and more efficient experience behind the wheel, but the dawn of the age of autonomous vehicles promises a major jump forward.

SAE International, the engineering standards body, defines six levels of vehicle autonomy. These are used to evaluate the technological sophistication of any driving automation system, based on the amount of human interaction required.

The scale ranges from 0 to 5, with the second lowest level representative of most modern cars fitted with the likes of adaptive cruise control and parking assistance.

The highest category dispenses with the need for drivers altogether, with vehicles using radar and sonic sensors and video cameras to identify roads, other vehicles, street furniture and pedestrians. The data is then fed into processors which control steering, braking, and acceleration. It is this fully autonomous concept which Chris Grayling believes will herald a transport revolution.

However, whether it comes to pass will depend on the success of ongoing tests here and abroad, as well as a commitment by manufacturers.

Some firms are creating prototypes with steering wheels and pedals which allow drivers to take charge of the vehicle at any time, while others are doing away with such controls altogether.