Crash investigation is the process of examining the circumstances surrounding a vehicle accident to determine its cause. This involves collecting evidence from the scene, such as vehicle damage, skid marks, and road conditions. Investigators may also interview witnesses and review traffic camera footage to gather more information. The findings from a crash investigation can help improve road safety and inform legal proceedings. Authorities, such as law enforcement and traffic safety agencies, use this information to identify patterns and implement measures to prevent future accidents. Understanding the causes of crashes is essential for enhancing public safety on the roads.