What should you do when changing lanes to check your blind spot?

When changing lanes, it is crucial to ensure that you have a clear view of any vehicles or obstacles that may be in your blind spot. The correct approach involves turning your head to look over your shoulders while also utilizing your mirrors. This method allows you to expand your field of vision beyond what the mirrors can capture, ensuring safety as you move into another lane.

Using both inside and outside mirrors can provide valuable information on surrounding traffic, but they do not completely eliminate the blind spots. Relying solely on the inside mirror would miss the areas that are not visible through it, and signaling without checking can lead to unsafe maneuvers, as it can cause you to unknowingly change lanes into a vehicle that you cannot see. Thus, combining looking over your shoulders with proper mirror usage is the comprehensive way to check for other vehicles or hazards effectively before making a lane change.