When you get in a wreck, always get a police report. People are the most honest and have the best recollection right when the wreck happens. Over time, memories fade and stories change.
If you get a police report, you have a record of the investigation that you can rely on. More importantly, the police officer can testify about his investigation and give his opinion about who was at fault. Judges and juries expect the parties to a lawsuit to testify to what is best for their respective cases, but usually give more weight to an independent third party, like a police officer.
In order to give the officer a chance to best investigate the wreck, try to avoid moving the vehicles until the officer arrives unless your safety depends on it. If you have to move the vehicles from the roadway, make sure you take several pictures with you cell phone from multiple angles so they may be shown to the officer. Make sure you also share those pictures with your attorney at the Cossé Law Firm so that they can be used to prove your case.