California DMV Motorcycle Knowledge Test (M1)Lane Position and VisibilityEasy
Which of the following is the most significant reason for a motorcyclist to continuously scan their mirrors and turn their head for a 'head check' before changing lanes?
- ATo ensure their turn signal is functioning correctly.
- BTo confirm that other drivers are aware of their intentions.
- CTo check for speed enforcement devices.
- DTo identify vehicles in their blind spots that mirrors may not reveal.
Show answer & explanationAnswer & explanation
Correct answer: D. To identify vehicles in their blind spots that mirrors may not reveal.
Mirrors have blind spots where other vehicles, especially smaller ones like motorcycles, can be hidden. A 'head check' or 'shoulder check' is essential to physically look into these areas to ensure no vehicle is present before committing to a lane change.
Why the other options are wrong
- A. While important, turn signal function is usually checked visually or by indicator lights, not typically during a head check for lane change.
- B. You cannot guarantee other drivers' awareness, only your own safe actions.
- C. Checking for speed enforcement is not a primary safety reason for a head check before changing lanes.
Blind Spot Check (Head Check)
A quick turn of the head to physically look into areas not visible in mirrors before making a lane change or turn, specifically to identify vehicles in blind spots.
- Mirrors have limitations and blind spots.
- Essential before any lateral movement.
- Prevents collisions with unseen vehicles.
Memory trick: Signal, Mirrors, Head Check, Go: The 'SMHG' safety flow.