Final answer:
A written report must be filed typically within a specific timeframe with the local or state law enforcement or DMV when an accident results in death, injury, or significant property damage.
Step-by-step explanation:
When you are involved in any accident causing death, personal injury, or aggregate damage of a certain amount, a written report must typically be filed within a specific number of days. The threshold for reporting and the exact time frame can vary by jurisdiction, but the report usually needs to be filed with the local or state law enforcement agency or the department of motor vehicles.
In the instance of car accidents, this requirement is meant to ensure that there is an official record of the incident which can be used for insurance claims, legal inquiries, and statistical analysis on road safety. It's essential to check the specific laws in your state or local jurisdiction to determine the exact monetary threshold for reporting accidents and the precise time frame within which the report must be submitted.