Roads of the future could be self-healing, report claims

03/12/2014
Highways Reporters

Future highways will be made from self-healing, glow-in-the-dark materials and will be governed by sophisticated technologies that communicate with cars, road infrastructure and GPS systems, according to the Future of Highways report from global engineering and design consultancy, Arup.

The report, which looks at the implications of trends up to 2050, considers the consequences of themes including rapid urbanisation. Up to 75% of the global population will be city dwellers by 2050. The Future of Highways considers why this rise in the urban population means we will need to substantially increase the capacity for individual mobility and freight transport. The report also considers how climate change, resource depletion and changes in human behaviour will shape our roads in the future.

Tony Marshall, global highways business leader for Arup, said: “Anticipating and researching future trends will help us move towards a connected, low-carbon future, where mobility solutions put users at the heart of design and potential challenges are addressed as early as possible.”

With a vast increase in the number of road users, minimising the impact and frequency of maintenance work will be critical.

The progress anticipated in the development of materials such as self-healing concrete – which produces bacteria to fill cracks when concrete gets damaged – could significantly reduce the cost of a structure, while creating a more resilient and sustainable infrastructure.

As well as being self-healing, the report envisions that surfaces could be replaced with advanced solar panels that would generate clean and renewable power, and wirelessly charge electric cars as they are driving on the roads or are parked. The panels would also contain LED lighting and heating elements to melt snow. Temperature-sensitive paint on the roads will generate giant snowflake-shaped warnings to indicate a drop in temperature and icy conditions.

“While temperature-sensitive paint and solar surfaces may seem far-fetched, the innovations envisioned in this report are already being tested and piloted around the world. They will change the way that we approach mobility and freight transport and will provide safer, more reliable and more environmentally friendly highway infrastructure for generations to come,” adds Marshall.

As well as highways evolving, the report foresees that patterns of ownership will change in the coming years, with commuters more likely to purchase access to a vehicle rather than the vehicle itself. While the number of motorised vehicles on our roads is expected to increase by three percent annually until 2030 - up to two billion - the use of non-motorised transport such as bikes and walking is also due to rise in popularity.

Electric cars are anticipated to become commonplace on the roads of the future as developments in material science will dramatically improve the performance of batteries and the potential for increased electricity storage. Fully-automated navigation systems will also enable roads to be populated by driverless cars.

The report also suggests a number of ways in which we might respond to the increasing volume of traffic on our roads. Vehicles will become increasingly ‘intelligent’ and ‘self-aware’: a combination of the connected vehicle and the Internet of Things will enable vehicles to broadcast and receive information on traffic, speed, weather and potential safety hazards. As a result, cars will be able to travel closer together and react more quickly to variables around them. This will open the market to people previously unable to operate vehicles such as the elderly or disabled.

“Intelligent traffic and control systems will make our roads safer and more sustainable. By communicating with traffic signals, traffic cameras and GPS systems, these solutions will help make our roads a safer place to travel on. Driver stress caused as a result of heavy traffic and delays will be a thing of the past, as drivers will receive customised information from commercial travel services to make their journey as easy and free-flowing as possible,” notes Tim Gammons, director, intelligent transport systems of Arup.

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