The "Roads that cars can read report says that inadequate maintenance and differences in road markings and traffic signs are now a major obstacle to the effective use of technology in vehicles, such as lane departure warning and traffic sign recognition. It adds that the majority of travel – and road deaths – occur on these roads, which comprise just 10% of the network.

In a statement, the organisations said: ‘Now vehicles, like drivers, will not function well where road markings and signs are worn out, inconsistent or confusing. This means putting an end to the different fonts, colours, sizes and shapes that are seen in even the most basic, internationally standardised safety signs such as "stop" and "give way". It means standardising the width of white lines and the amount of light they reflect – and ensuring the edges of major roads are marked.’

John Dawson, EuroRAP chairman, said: ‘There needs to be a fundamental change in the discipline we apply to road infrastructure. Lane markings are now the “rails” for self-steering vehicles.  The safety standards of the rail and aviation industry need to be applied to major roads.’

Michiel van Ratingen, secretary general, Euro NCAP, added: "We set demanding standards for 5-star cars.  We must now move towards 5-star roads where the quality of road markings and signs are assured to work with modern vehicles."