New signs showing the price of fuel on a section of the M5 are to be introduced between Bristol and Exeter.

The move is part of a trial by Highways England designed to give drivers more information to help their journeys and to boost competition on fuel prices. Five motorway service areas are involved in the trial which, depending on the results, could ultimately be rolled out nationally.

Electronic message signs will show the price of fuel at Gordano, Sedgemoor, Bridgwater, Taunton Deane and Exeter motorway service areas.

Roads minister Andrew Jones said: “The government is on the side of the honest motorists who have raised concerns for too long about petrol prices at motorway service stations. This trial will allow drivers to be much better informed about the cost of fuel and make it easier to plan their breaks around the cheapest deals.”

Chief highways engineer at Highways England, Mike Wilson said: “Providing fuel price information is an important part of a bigger picture – we want road users to be more informed and in better control of their journeys. This means they’ll be better prepared, more inclined to plan breaks and have a positive driving experience.

“It’s still very important for motorists to properly plan their journeys and ensure they have sufficient fuel. Running out of fuel on motorways can be hazardous to yourself and other drivers.”

The trial will run until the end of 2017 during which time Highways England will be monitoring the effectiveness of the signs in providing useful information to road users, understanding the impact on improving fuel prices, and also monitoring whether there are any safety implications such a more cases of running out of fuel.