Construction site automation goes beyond driverless tractors

Driverless tractors and autonomous robots have brought machinery automation to a mainstream audience through programmes such as Clarkson’s Farm. However, the more significant development for construction is already happening through machine control, artificial intelligence and connected equipment.

According to Ian De Dobbelaere, Commercial Project Manager at Komatsu Smart Construction, the transition is not simply about removing operators from cabs. It is about connecting machines with accurate project information so that work can be completed with fewer passes, less rework and more efficient use of people and equipment.

Construction site automation is already at work

Excavators and dozers have used digital designs and machine-control systems for several years. These technologies help operators dig, grade and shape the ground to the required profile without relying entirely on traditional setting-out methods.

Komatsu’s Intelligent Machine Control technology, for example, gives operators access to survey-grade project information from the machine. By comparing the position of the bucket or blade with a digital design, the system can help prevent over-excavation and reduce unnecessary machine movements.

This represents an important stage between conventional machine operation and full autonomy. The operator remains responsible for the machine, but repetitive movements and accuracy checks can increasingly be supported by technology.

Reducing unnecessary passes can shorten machine operating hours while lowering fuel consumption, component wear and emissions. The precise benefits will depend on the application, project information and how effectively the technology is integrated across the site.

Why construction is harder to automate than mining

Autonomous haul trucks have operated at large mining sites for years. These controlled environments typically have defined routes, repetitive tasks and limited interaction with the public.

Construction sites present a different challenge. Ground conditions, access routes, trades and logistics can change daily. Machines must work around people, temporary structures and other equipment, often within confined or constantly evolving working areas.

Although an individual machine may already be capable of steering, digging or grading with limited input, it still needs reliable information about the wider site.

Connectivity can be a particular obstacle on remote projects, but the broader requirement is for machines, survey data, digital designs and project teams to operate within the same connected system. Making the machine autonomous is only one part of making the whole site work efficiently.

Automation changes the operator’s role

Skills shortages and rising operating costs are increasing interest in technologies that allow contractors to achieve more with their existing resources.

That does not necessarily mean removing people from the operation. Instead, automation can reduce the time spent on repetitive physical tasks, allowing operators and site teams to concentrate on planning, supervision and resolving problems.

Experienced operators will remain particularly important on construction sites where conditions can change quickly. Machine intelligence can support their decisions and improve consistency, but it cannot replace the wider awareness and judgement required in an unpredictable working environment.

Yorkshire Water project demonstrates practical gains

The potential benefits were demonstrated during the Dearne Reach integrated constructed wetland project, delivered by Mott MacDonald Bentley on behalf of Yorkshire Water.

Artificial intelligence was used to plan earthmoving operations and the distribution of tens of thousands of cubic metres of material. Intelligent plant then used digital project information to complete the required work more accurately.

The approach reduced the need for engineers and banksmen to work alongside operating machinery. It also helped the project finish three weeks earlier than predicted, delivering a reported saving of £350,000.

The machines were still guided by operators, which is an important distinction. The gains came from connecting planning, project data and machine technology rather than operating an entirely driverless site.

From intelligent machines to connected sites

Fully autonomous construction equipment will require more than machines capable of moving without an operator. Sites will need accurate digital models, reliable connectivity, live progress information and systems that allow people and equipment to work safely together.

Many of the building blocks are already available. Machine control, drones, digital surveying, connected equipment and AI-assisted planning are helping contractors reduce rework and make better use of available resources.

The driverless tractor may be the most visible symbol of automation, but the more immediate change is the development of construction sites where machines receive better information and operators are supported by increasingly intelligent systems.

Further information about connected construction technology is available from Komatsu Smart Construction.