Yes, you should. When you get injured in a truck accident, your words alone may not be enough to help secure the compensation you need and deserve. The other party's insurer will not compensate you for the accident, even if you appear visibly injured. For this reason, having a police report improves your chances of winning such a claim or lawsuit because insurance companies are more likely to believe a police officer than a claimant.
When the officer arrives at the accident scene, they will collect the following information:
Identity and contact information of all parties involved
Description of the accident scene, together with evidence such as photos
Insurance information of the parties involved
The party responsible for the accident
In addition, the police officer can also provide you with an official police report or assist you in obtaining one. This report could come in handy in the future.