Aprofessional driver looks into his mirrors every few seconds just to make sure nothing has changed on either side of a truck where cars or pedestrians are concerned. This constant checking of the mirrors is one of the things that makes driving a large vehicle a full time job even on a deserted street or highway.
RJ is doing a good job scanning my mirrors. At the same moment that Officer Blue steps off the curb, RJ glances in his right-rear-view mirror to make sure Officer Brown is still sitting on his bicycle by the curb talking to his friend.
RJ spots Officer Blue step off the curb just before he checks on Officer Brown. Can you see Officer Brown in my mirror?