How often should we check the mirrors:

How often should we check the mirrors:
A)On roads without traffic and motorways/dual carriageways every 5/10 seconds.
B)In urban areas and roads with traffic every 10/15 seconds.
C)In urban areas and roads with traffic every 5/10 seconds.Correct
In order to drive more safely by gathering all information from the surroundings, it is necessary to check the mirrors constantly. The frequency should be: - On urban roads and roads with traffic: every 5/10 seconds. - On roads without traffic and motorways/dual carriageways: every 10/15 seconds.