Which action is NOT recommended before starting your vehicle?

Before starting your vehicle, focusing on essential safety checks is crucial. Adjusting the radio is not recommended as it can distract you from the important tasks that ensure a safe driving environment.

On the other hand, adjusting mirrors, looking for traffic, and checking the windshield for cleanliness are vital actions to enhance visibility and awareness before driving. Proper mirror adjustments help eliminate blind spots, looking for traffic ensures you are aware of your surroundings and other road users, and checking the windshield ensures that nothing obstructs your view, which is critical for safe driving. Engaging in these practices helps create a safer environment before putting the vehicle in motion.