About filming the process.

[amoudi98]

Hello dear, first of all thank you for sharing your work, its extraordinary. I have a question about labelling the data, can you tell me how did you label a certain action as aggressive turning or aggressive braking? If you have the videos that was filmed uploaded somewhere and would share them that would be awesome. I am working on similar project and your work has helped a lot.

[jair-jr]

Dear Amoudi, I'm glad my work is useful to you.

Unfortunately, I don't have the videos anymore, but I can tell you how I recorded them. The smartphone was firmly placed on a windshield support which was also firmly attached to the car windshield. During a trip, the Android app records sensor data and displays a timer of the trip elapsed time with milliseconds precision. There's one person in the backseat filming the smartphone screen, the driver, the car panel and steering wheel. For each maneuver, the driver says the type of the manuever (e.g., aggressive breaking, aggressive turning) and executes it. After data collection is finished, I watch the videos and, for each maneuver, I write down its type and exact start and end times from the timer displayed on the smartphone screen.

This is how I labelled the driving events. I hope I was able to answer your questions.

All the best, Jair Ferreira

[amoudi98]

Oh it's okay, actually i may not have asked my question correctly. I want to know how did you differentiate between a normal turn right and an aggressive turn right, did you have some basics or is it based on our experience in driving. Thank you for your time.

[jair-jr]

The difference between an aggressive and normal driving event was based on the driver's experience. The only instruction to the driver was to execute the maneuver aggressively or normally.