Mercedes A-Class, Part 1

How “easy-to-use” are car navigation systems? #driverdistraction #usertesting

My #userexperience of the #Mercedes #infotainment, Part 1

I believe that destination entry should be allowed only when the car is stationary (as per Android Auto) , unless you can use voice commands.

Data collection and analysis are from a personal study, if there are any data from controlled experiments, please share. #eyetracking #humanmachineinterface

I know that most of you are waiting for the Mercedes voice system. Part 2 of the study will include data on #voice interaction, but voice could not be an excuse for poor execution of other interaction methods.

more of my data and opinions: https://panos.blog/

Many thanks to Scott Hodgins and Jon Ward at Tobii Pro

Lexus NX300, Part 1

Hey Lexus ...

have you done your driver distraction, user testing, duty of care ?

My user experience of the Lexus infotainment , Part 1

I believe that destination entry should be allowed only when the car is stationary (as per Android Auto).

Part 2 of the study will include data on voice interaction, but voice could not be an excuse for poor execution of other interaction methods.

Data collection and analysis are from a personal study, if there are any data from controlled experiments, please share

Many thanks to Scott Hodgins and Jon Ward at Tobii Pro

Volvo XC60, Part 1

How “easy-to-use” are car navigation systems?. #driverdistraction

My #userexperience of the #Volvo #infotainment, Part 1

I believe that destination entry should be allowed only when the car is stationary (as per Android Auto)

Data collection and analysis for a personal study, if there are any data from controlled experiments, please share #eyetracking #HMI

novices vs. expert users

who should test our HMI?

should we use people with no prior knowledge of the system or test people with system knowledge?

if you want to capture first impressions you have to test "naive" participants. if you want to test system efficiency and effectiveness you should test participants with some system knowledge.

I am not sure if you can do both. for example, in one on-road study (see video), the owner of the car had no knowledge of a navigation feature and that resulted in 3 times more eyes-of-the-road time in comparison with his 2nd attempt that he knew about the feature. significant difference on performance.

because I really love on-road studies, and because I don't want people learning the system while they are driving, I use people with system knowledge or I train them before the task. I try to capture some, limited, first impressions during system setup (e.g. phone pairing and home/work address setup).

what is your approach ? have you got the resources to run longitudinal studies?

Data collection and analysis as part of a personal study conducted in the summer of 2018. Many thanks to Scott Hodgins and Jon Ward at Tobii Pro

task time

How important is total task time when measuring system performance and driver distraction? Can we rely on task time and number of steps?

For example, when I had to dial a contact from my address book it took me 14 seconds with the touchscreen, 21s with the idrive and 26s when I used the idrive + touchpad. So touchscreen must be the best right? Of course, touchscreen is the best, it's a no brainer.

Will it be such an easy choice if I tell you that for the same use case touchscreen had 9s total eyes-off-road time (TEORT), idrive had 8s and idrive + touchpad had 6s TEORT?

That is the reason why I love using eye tracking, because it helps me understand the data at a deeper level.

Of course, there are questions about mental workload while still on the task and despite eyes-on-road. In addition, mind wandering while driving needs to be taken into account. However, I believe that eye tracking can provide high quality evidence that increases the strength of our recommendations.

Data collection and analysis as part of a personal study conducted in the summer of 2018. Many thanks to Scott Hodgins and Jon Ward at Tobii Pro

P.S. idrive is an extremely powerful system. I still love touchscreens and the Audi A8