The introduction of autonomous vehicles (AVs) could result in a better maintained local road network believes the Road Surface Treatments Association (RSTA).

Current live trials are pushing the momentum for the future introduction of driverless cars. In South London, driverless taxis car are currently being tested by FiveAL. The trials will test self-driving software on real busy roads in Croydon and Bromley. Trained drivers will be present in case something goes wrong. Also in London, focused on zones 1,2 and 3, Wayve are trialling eight driverless Jaguar I-Pace SUVs. Meanwhile, by the end of this year HumanDrive will have completed a 230 mile journey across the UK to test an AV in real road driving conditions from country roads to motorways.

The future benefits of self-driving cars include less accidents, improved use of road space, reduced congestion and pollution and more efficient fuel consumption. AVs would be equipped to ‘read the road’ and replicate the instinctive human ability to simultaneously observe, analyse, decide and react to every potential different road scenario such as potholes and reduced skid resistance.

“There is a flaw in the plan. The deterioration of the local road network due to decades on under-investment means that that rather than a vision of fast, smooth, well-spaced self-driving cars, the reality could be that poor road surfaces will cause the vehicles to switch to slow safety mode and signal constant warnings of approaching poor road surface conditions”, said Mike Harper, RSTA chief executive.

However, Harper believes that the AVs having to go into repetitive safe mode could have a silver lining for local road investment. “Having to go into safe move would highlight the poor condition of the road surface and the need to do something about it. This would help local authorities with their business case for more funding to invest in local roads.”

Sensors fitted to AVs could provide live data on the road condition and so help local authorities not only know where pothole repairs are need but could provide the information necessary for planned programmes of maintenance.

Harper points to a research project being undertaken by Transport Scotland, Transport for West Midlands and Jaguar Land Rover to develop a system that enables AVs to spot and report potholes. Using a platform created by transport analytics firm Inrix, the AV Road Rules system would have a link to local road authorities alerting them to road damage or potholes to enable fast and efficient repair.

He said: “This is where AV’s could have a very useful role in improving the condition of our roads. Their adoption would provide real-time data that could prove valuable in developing and implementing surface dressing and maintenance programmes using a range of surface treatments, at the earliest signs of decay that would prevent potholes from forming in the first place.

AVs are being trialled as the future. This future should be one where potholes are prevented from forming as part of a well-managed, long term approach to road maintenance using the range of innovative, cost-effective surface treatments already available through RSTA members.”