According to the Commercial Driver's Handbook, which of these is not suggested when passing a vehicle?

When passing a vehicle, it's important to follow safe driving practices to ensure the safety of all road users. The correct answer is that turning on high beams while passing at night is not suggested. This is because high beams can blind the driver of the vehicle you are passing, making it unsafe for them and potentially leading to an accident. Instead of providing greater visibility, high beams can create a dangerous situation, particularly at night when visibility is already limited.

In contrast, signaling before merging back, frequently checking mirrors, and accelerating steadily are all encouraged practices when passing. Signaling ensures that other drivers are aware of your intentions, while checking mirrors frequently helps you monitor the position of both the vehicle you are passing and any other traffic that may be approaching. Accelerating steadily allows you to complete the maneuver efficiently while maintaining control of your vehicle.