How can a driver reduce the chances of an accident while changing lanes?

When changing lanes, it is crucial for a driver to prioritize safety and awareness of their surroundings. Looking over your shoulder to check blind spots is the correct approach because it ensures that the driver is aware of any vehicles or obstacles that may not be visible in the mirrors. This extra step helps identify any potential hazards that could lead to a collision.

Employing this method allows drivers to make informed decisions about whether it is safe to change lanes. It enhances overall safety by allowing for the detection of vehicles that may be in close proximity or moving at high speeds that are not reflected in the side or rearview mirrors. This awareness significantly reduces the likelihood of an accident during lane changes.

The other options suggest actions that compromise safety, such as failing to check for blind spots or signaling while ignoring vital visual checks. These practices can increase the risk of accidents, underscoring the importance of thorough checks when changing lanes.