Benchmarking data on worker reactions to triggering events

1. Real-world Benchmarking Data The objective of this task was to determine if Virtual Reality-based captured behavioral data on responses to notifications are similar to what is expected in real-world settings. For this purpose, a real-world bench mark experiment was designed to capture participant response times to wearable watch alarms triggered upon simulated traffic near the mobile work zone on the experiment site in an urban setting. The proposed scope of data collection of the real-world study included the external environmental factors (e.g., site accessibility, weather). The key parameters of research are defined as reaction time to received alarms and the heart rate measures. Table 1 provides the list of parameters that were controlled and measured during the experiments. Table 1. Key parameters measured and tracked during real-world experiments Variable name Descriptions Key parameters captured Reaction time The time that one takes from getting the haptic or sound alarm from a wearable alarm device, herein referring to the apple watch, to the point when the participant gives a response by stopping the alarm by pressing on the screen of the smartwatch Inter-beat interval (IBI, heart rate) The time interval between individual beats of the heart; the data is measured by using E4 application provided by Empatica External factors tracked Ambient noise The level of ambient noise in the area is a factor potentially influencing participants’ reactions and is considered in the experiment design Temperature Daytime temperature recorded at each experiment Number of pedestrians on site Number of participants counted during the time of the experiment to record on the varying factors in the external environment in real-world settings In the experiment, each participant was asked to participate in the experiment three times. In each trial, data was recorded separately for each alarm sent to smartwatch from the administrator at triggering events (precisely, every time the remote-controlled toy car reaches the line 30 ft apart from the designated work area). Each alarm signal at each trial was recorded for all 31 participants to the experiment. Timestamps are automatically recorded in server in the events recorded in the format of Table 2: Table 2. Format of raw data stored in the server, starting in December 2022. Timestamp From Event 0 2022-12-08 13:37:53.101391 VR Received car approaching alert, mode=3, id=1000 1 2022-12-08 15:53:05.098288 Watch Start Simulat