Which of the following must be documented in a DUI report?

Documenting that the officer followed lawful arrest procedures is crucial in a DUI report. This serves several important functions. It establishes that the arrest was conducted in compliance with legal standards, thereby safeguarding the officer’s actions from potential legal scrutiny or challenges in court. It also supports the integrity of the evidence and ensures that the defendant's rights were upheld during the traffic stop and subsequent arrest. This documentation is essential for the prosecution's case, as it helps demonstrate that the officer acted within the boundaries of the law, which can influence the outcome of the case.

While documenting the weather conditions, vehicle model, or the validity of the driver's license can provide context and additional information for the incident, they do not have the same legal significance as adhering to lawful arrest procedures, which is fundamental to a valid DUI case.