Home › CDL Practice Tests › General Knowledge Questions › Question 16
Which mirror routine is correct before starting a trip?
- A.Mirrors can be adjusted from the road after you start rolling
- B.Only the driver-side mirror needs adjustment
- C.Flat mirrors alone are enough, convex mirrors are decorative
- D.Set your seat first, then adjust flat and convex mirrors so you can see the sides and rear of the vehicle
Correct answer
D. Set your seat first, then adjust flat and convex mirrors so you can see the sides and rear of the vehicle
Why
Mirror aim depends on your seated position, so the seat goes first and mirrors second, before the vehicle moves. Using both flat and convex mirrors gives the widest view of the lanes beside and behind you.
Manual topic: Vehicle Inspection - Mirrors · From the General Knowledge practice bank (GK-016).