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Future intent: Would you let an automated car do the driving?

October 07, 2019

Would you be comfortable taking a nap in the driver's seat while your fully automated car did the driving?

QUT researchers in Brisbane, Australia, have released the results of two new studies that looked at drivers' willingness to one day embrace automated vehicle technology.

Associate Professor Ioni Lewis from QUT's Centre for Accident Research and Road Safety-Queensland (CARRS-Q) was co-chief investigator in an international study that surveyed 1563 drivers across Australia, France and Sweden about their intentions - or otherwise - to one day have a Level 4 automated car that did the driving for them.

"Under international standards, a Level 4 automated car is a high automation vehicle that can completely drive itself," she said.

"Together with colleagues in France and Sweden, we surveyed members of the general public across the three countries and asked them about their intentions to adopt this sort of technology in the future.

"We found French drivers were more keen to embrace automated cars than drivers in Australia and Sweden.

"France has been trialling automated cars for several years and is a world leader, so we think this increased level of community exposure to these cars may have contributed to the differences in intentions found between the countries.

"We also wanted to identify the psychological reasons behind people's intentions. In France and Sweden, people's 'attitude' (their emotions and beliefs) toward these vehicles was the biggest predictor but in Australia it was 'performance expectancy', which reflected how much they thought a highly automated vehicle would actually assist them.

"Realistically, we are still some time away from Level 5 cars, which completely drive themselves and don't even need a steering wheel. At the moment people can buy up to Level 2 cars - these are vehicles that still require a driver but can do some basic tasks, like braking, by themselves. But it's important to understand driver perceptions and intentions now as we plan for the future."

Dr Sherrie-Anne Kaye is another QUT researcher looking at what drivers think of driverless cars and was the other chief investigator in the international survey.

She is a Research Fellow (Advanced Technologies) with CARRS-Q and also led another Queensland-specific survey.

"The Queensland study surveyed 505 drivers on what they perceived to be the advantages and disadvantages of automated cars," she said.

"They reported quite a few advantages, including that these cars would make driving easier for elderly people and people with disabilities, reduce the human errors that contribute to crashes, and enable people to multi-task during their commutes.

"But some of the common concerns included possible technology malfunctions, hacking and privacy issues, who was legally liable, problems with mixed traffic environments (automated and non-automated vehicles) and losing the enjoyment of driving a car themselves.

"The perceived barriers to one day driving an automated car included the high cost, a lack of trust and control, safety (for themselves and others) and current legislation."

With automated vehicle trials now getting underway in Australia, law-makers are also getting ready for the new technology.

Australia's National Transport Commission (NTC) is currently revising the country's laws to allow automated vehicles to operate safely and legally on Australian roads, and look at implications for areas like motor accident injury insurance.

By 2020 the NTC aims to have an end-to-end system of regulation for automated vehicles in Australia.

The Society of Automotive Engineers (SAE) sets the internationally-recognised standard outlining levels of driving automation.

There are six levels, ranging from Level 0 to 5.

Level 0 (No Automation) - The driver is in charge of all the driving but the car can provide warnings about the environment.

Level 1 (Driver Assistance) - The driver does all the driving with some basic help like automatic emergency braking.

Level 2 (Partial Automation) - The car can automatically steer, accelerate and brake in limited situations but the driver must stay fully alert, even when the vehicle is driving.

Level 3 (Conditional Automation) - The car can take full control of steering, acceleration and braking under certain conditions and the driver has to be ready to take over if needed.

Level 4 (High Automation) - These cars can assume all driving tasks in nearly all conditions without any driver attention. Drivers can 'tune out' and do other things, even take a nap. But, with notice, they have to be able to take over if neded.

Level 5 (Full Automation) - No steering wheel required! These cars do everything and have no driver, just passengers. Think robot taxi.
-end-
Both QUT studies were recently presented at the 2019 Australasian Road Safety Conference in Adelaide, Australia.

Queensland University of Technology

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