Alberta Class 7 License Practice Test

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Prepare for the Alberta Class 7 License Test with interactive quizzes and detailed explanations. Master road signs, rules, and driving regulations. Set yourself up for success and ace your exam!

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What do properly positioned head restraints greatly reduce?

The risk of airbag deployment
The likelihood of tire blowouts
The risk of whiplash injuries in rear-end collisions
The chance of hard braking

The correct answer is: The risk of whiplash injuries in rear-end collisions

Properly positioned head restraints play a crucial role in enhancing safety during rear-end collisions. They are designed to support the head and neck, which helps to prevent or minimize the severity of whiplash injuries that can occur when the body is thrust forward upon impact. Whiplash injuries are characterized by the sudden movement of the head and neck, often resulting in pain and discomfort. When head restraints are adjusted correctly to be in line with the back of the head, they can absorb some of the energy from the collision and prevent excessive movement of the head. This alignment is essential for reducing the potential for injury. Additionally, research shows that most whiplash cases in rear-end accidents occur when the head restraint is either too low or positioned too far away from the head, underscoring the importance of proper positioning. The other options presented—such as airbag deployment, tire blowouts, and hard braking—do not directly relate to the primary function of head restraints, which is to protect the neck during rear-end impacts. Thus, understanding the correct positioning and function of head restraints is vital for minimizing injury risks in specific collision scenarios, particularly those involving a rear-end crash.