You should contact the police to investigate the accident and create a police report. This will allow you to use this report for your personal injury claim and settlement. The report will include key data points such as: Date and time of the accident Location of the accident Details about the weather and road conditions Parties involved in the collision - this includes you and the driver of the commercial truck Contact information of the witnesses Statements from the involved parties and witnesses A diagram of the scene Any citations or violations that occurred Suggested cause of the accident and possible fault