What should you do if you are changing lanes and there is a vehicle in your blind spot?

When changing lanes, ensuring the safety of all road users is paramount. Checking your blind spot again and confirming that it is clear is the safest approach. The blind spot is the area around your vehicle that cannot be directly observed through your mirrors, and it is crucial to ascertain that no vehicle is occupying that space before executing the lane change. This action minimizes the risk of collisions and helps maintain a safe driving environment.

The other choices present less safe practices. Changing lanes without checking could result in an accident if a vehicle is indeed present in the blind spot. Signaling your intention to change lanes and proceeding without confirming the blind spot is also risky, as it assumes the lane is clear based solely on the mirrors. Honking your horn to alert another driver does not address the fundamental issue of ensuring that the lane is safe for merging and could imply aggressive driving rather than prudent vehicle operation. Thus, reaffirming that the blind spot is clear before proceeding is the most responsible action.