What does 'mechanical failure' refer to in traffic crash investigations?

In the context of traffic crash investigations, 'mechanical failure' specifically refers to issues with a vehicle's mechanical systems that can lead to a crash. This includes problems such as brake failure, which directly affects a driver's ability to control the vehicle and stop safely. When investigating a traffic crash, understanding any mechanical failures is crucial because they can serve as significant factors that contribute to an accident. Identifying mechanical issues can help determine if the driver was at fault or if the accident was caused by a failure of the vehicle's equipment.

On the other hand, violations of traffic laws, ignoring road signs, and poor weather conditions pertain to human behavior and environmental factors rather than the mechanical integrity of the vehicle itself. While these factors can also play a role in traffic accidents, they do not fall under the definition of 'mechanical failure.' Thus, focusing on things like brake and engine failures is essential for a thorough investigation of vehicle-related incidents.