First, contact the police and have them document the incident. A police report will serve as crucial evidence in your UIM claim.Call the police and file a report. Document the accident scene with photos or videos. Most auto policies include collision coverage that will pay for car repairs if you're in an accident with an uninsured or underinsured driver. After an accident occurs, call 911 immediately. Have a peace officer complete a Police Accident Report (PARC) form. The Texas state law allows you to hold the motorist who caused your accident legally responsible for damage incurred. While car accidents with uninsured drivers can be complex, you can still seek compensation for your injuries. Under the law of the State of Texas, every motorist in the state must have a certain amount of car insurance coverage in order to operate their vehicle legally.