According to the study, the daily commute offers an opportunity for people to engage in “role-clarifying prospection”, meaning it gives them time and space to think about the upcoming work role. “Through role-clarifying prospection, employees mentally shift their attention from what they are experiencing in the present - thoughts pertaining to their commute, or thoughts unrelated to their past or future role - to what they will be experiencing when they arrive at work, namely, thoughts pertaining to their workday,” the authors write.
Read here (BBC, May 21, 2020)