Arizona Driving Permit Written Practice Test 2026 - Free Driving Permit Practice Questions and Study Guide

Checking mirrors and blind spots is essential before changing lanes because it provides a comprehensive view of surrounding traffic. Relying solely on the rearview mirror would leave blind spots unchecked, where vehicles may be hidden from view. Additionally, only looking over your shoulder would not include information from your mirrors, which can show vehicles approaching from behind and in adjacent lanes. Sound alone is not a reliable indicator of traffic conditions, as it may not offer an accurate picture of surrounding vehicles. Therefore, combining mirror checks with blind spot assessments allows for a safer lane change by ensuring that no vehicles are in a position to be obscured from view. This practice maximizes your awareness of the traffic environment, thereby enhancing your ability to change lanes safely.