437 Which of the following descriptions is incorrect about the turn signal on the motorcycle? ( 1 )the purpose is to warn the vehicles behind about the turning direction ( 2 )the color of the lights should be orange ( 3 )It is ok to decide whether to use the signal or not right before turning according to the road conditions.

433 Which of the following is correct? (A)when the tire tread wear is horizontally aligned with the indicator, it is time to replace the tire (B)when the tire tread wear is vertically aligned with the indicator, it is time to replace the tire (C)when any of the tire tread wears down to 1.6 mm, it is time to replace the tire.

434 Which of the following is not a necessary step before riding a motorcycle? (A)check the lights (B)check the tire pressure (C)warm up the vehicle.

435 Which of the following is incorrect about the side mirrors on the motorcycle? (A)they are mostly convex mirrors (B)the side mirrors help the driver check the traffic behind (C)If a motorist is unable to clearly see the traffic behind from the side mirrors, adjust it immediately.

436 Which of the following is incorrect about the stands on the motorcycle? (A)they are divided into the main lift stand and side kick stand (B)they need to be replaced regularly (C)the side kick stand is less stable and should be used for temporary parking only.

438 Which of the following is correct about the accessories of the motorcycle? (A)the side mirrors interfere with how freely a motorcycle can travel through busy traffic, and can be removed when necessary (B)the headlight contains a high beam and low beam light (C)the side mirrors are concave mirrors.

439Passing another vehicle on a motorcycle is dangerous. Which of the following behaviors is wrong? (A)the driver should first make sure that passing is allowed on the section of the road (B) use the horn to warn the vehicles ahead, and then use the turn signal to warn the vehicles behind (C)pass the motorcycle ahead from the right at appropriate speed.

440 Which of the following is incorrect about the vehicle inner wheel turning radius, which of the following is incorrect? (1 )a small car does not have the turning radius of the inner section of the wheels ( 2 )vehicles with longer wheelbase have larger difference in inner wheel turning radius ( 3 )large vehicles, such as container trucks and gravel trucks will produce a larger difference in inner wheel turning radius.

441 Which of the following road conditions can make a motorcycle slip easily? (A)road markings (B)iron plates paved at the construction area (C)all of the above.

442 When a motorcycle is passing through a waterlogged area, the driver should (A)speed up (B)slow down (C)zigzag through.

443 Which of the following is not proper for a motorcycle rider before turning (A)use the turn signal (B)allow large vehicles to go first (C)turn on the headlight.