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# System prepended metadata

title: 'Study2: Instruction / Screen play for the experiment'

---

# Study2: Instruction / Screen play for the experiment


## In Simulator
- Your task is to first activate ACC, and then activate L2 assistance system when it's available. Be aware that you have to monitor the HMI (on instrument cluster behind the steering wheel) the whole time to know the states of the automated system.
    :::info 
    In each trial:
    - Drive from the shoulder to the lane left of shoulder (main lane)
    - Activate ACC as soon as you are in the main lane
    - Do not change lane
    :::
- In some scenarios, there would be a front vehicle. In these scenarios, please follow them while ACC is on 
- In some scenarios, the simulation would be paused after you activate the ACC. (The experimenter would inform you in those scenarios.)
- If you are not instructed to do anything after activating the ACC, you can activate L2 assistance system whenever you want (either it's ready or not). But **please keep the car in the center of the lane** and **monitor the states of the system (HMI)**. 
    ::: danger
    You can activate L2 assistance system whenever you want after ACC, but the simulation would be stopped 5 secs afterward.
    :::
    
- The simulation would end 5 seconds after the activation of L2 assistance system.
- After the end of each trial, please answer the questions in transparency assessment and workload survey. (on the ipad)


## Doing Survey
- Focus on the Instrument cluster only, not the touchscreen. You are asked to answer the survey question based on this HMI (the instrument cluster behind the steering wheel).


## Screens
#### Opening
- Thank you for participating this study. This video will briefly introduce this study and will guide you through the process.
    >1 
    > any SILAB demo video
- In this study, you will be driving a vehicle equipped with Level 2 automated assistance system. The Level 2 automated assistance system is composed by the sub-systems: one, longitudinal control, also known as ACC, where the system controls accelerate and decelerate automatically. And two, lateral control, where the system controls steering automatically. When Level 2 automated system is activated successfully, both acceleration and steering are controlled automatically.
    > 2
    > demo video blur, text show longitudinal and lateral control (accelerate, decelerate and steering) 
- Keep in mind that, despite the Level 2 automated system is activated, human driver remains responsible for monitoring the environment and controlling the vehicle at all times.
    > 3
- Your task in this study is to activate the Level 2 automated assistance system. To activate Level 2 automated assistance system, you must first activate the ACC by pressing this button on the touch screen located on the right-hand side of driver's seat. Then, press this button to activate the Level 2 automated assistance system.
    > 4
    > ACC button on the touch screen circled or pointed with arrow, then the same for L2 button
- During the driving, the states of all the systems might be changing because of the road condition and sensor limitation, but all the states will be communicated through the human machine interface on the instrument cluster, which is the screen behind the steering wheel. In this study, we investigate how easy it is for you as a driver to understand the states of automated systems through the human machine interface. Note that we will only be focusing on the instrument cluster.
    > 5
    > video of instrument cluster, only clear on the IC, blur the touch screen
    
#### In the simulator
- During the study, there will be in total of twelve trials. In each trial, please first drive from the shoulder to the lane left to it. Then, please activate the ACC and observe the state of the automated system from the human machine interface. After the ACC is activated, please activate the Level 2 automated assistance system whenever you feel comfortable.
    > 6
    > video of car from shoulder to left lane. Then ACC activated on touch screen. Then L2 on touch screen.
- After pressing the Level 2 automated assistance system activation button, the simulation would be stopped 5 second after, and you would be asked to fill in the survey regarding the system states and workload measurement, as you can see in the practice questions.
    > 7
    > video of doing practice test
- In some scenarios, after you activate the ACC, the simulation would be paused, and you would then be asked to fill in the survey regarding the system states and workload measurement. You will be guided by the experimenter before each pause.
    > 8
    > repeat video of the previous one, with simulator and then survey answering
- Keep in mind that, whenever the simulation is paused or stopped, there might be some disturbance on the steering wheel, so please keep your hands away from it.
    > 9
