South Dakota CDL Passenger Vehicles Practice Test

Why should your mirrors be adjusted to show the road behind you as well as part of your vehicle?

Having only the road in the mirrors would likely make the driver carsick. Having part of the truck in the mirrors serves as a point of reference. It is illegal to have only the road in the mirrors. The driver should be able to see the reflection of surrounding vehicles on the trailer.

Correct Answer:

Having part of the truck in the mirrors serves as a point of reference.

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