A crucial habit for preventing traffic accidents is drawing urgent attention.
On March 17, the YouTube channel 'Han Moon Chul TV' uploaded a video titled "Always Check Behind You Before Opening the Door!"
The video warns viewers why they must look back before opening a car door—and the shocking risks of "dooring" accidents if they don’t. It also shares that 'Han Moon Chul TV' is offering subscribers engine oil discount coupons through a partnership with the vehicle management app 'Cardoc' as part of a broader campaign to reduce traffic accidents and deliver real benefits to viewers. One netizen commented, "This is truly useful. I’ll make sure to check behind me before opening the door." Another added, "I need to build the habit of checking every single time."