Crash Investigations Class 315 Complete Practice Test 2026

Left and right in common response terminology are defined from the flow of traffic—the direction vehicles are moving on the roadway. This frame of reference keeps descriptions consistent for all responders, so terms like left or right reliably indicate relative positions as traffic is traveling, not from any one person’s point of view. If you used the driver’s seat perspective, the terms could flip for people describing the scene from different positions; using a map view would tie left and right to a static orientation (like north or south) that doesn’t reflect how traffic is actually moving. By tying left and right to the direction of travel, you communicate positions clearly, such as noting something on the left side of the roadway as traffic moves in its normal direction.