What term describes the impact when the vehicle first collides with an object?

The term that describes the impact when the vehicle first collides with an object is "First collision." This term specifically refers to the moment of the initial crash between the vehicle and another object, be it another vehicle, a stationary object, or a pedestrian. Understanding this term is crucial because it highlights the immediate moment of impact that dictates the dynamics of an accident. Recognizing the significance of the first collision can help in assessing the severity of a crash, evaluating vehicle damage, and understanding the impact on occupants within the vehicle.

The other terms have specific meanings but do not accurately reflect this initial moment of impact. "Secondary impact" refers to subsequent collisions that occur after the first strike, while "primary contact" and "initial strike" might imply similar concepts but are less commonly used in traffic safety discussions. Understanding the nuances between these terms can help in both accident reconstruction and studying the effects of collisions in traffic safety contexts.