What must be included on courtesy cards for the legal department?

The correct answer is that courtesy cards must include witnesses' names, addresses, and phone numbers. This information is crucial for the legal department as it helps in the investigation and assessment of any incidents that occur. Witnesses can provide valuable testimonies regarding the event, which can aid in legal proceedings or claims analysis.

Having accurate and readily available witness information allows the legal team to contact those individuals rapidly, ensuring that essential details are preserved and evaluated in a timely manner. This can directly impact the outcome of any legal considerations stemming from the incident.

Other options, while potentially relevant in different contexts, do not hold the same immediate importance for the legal department regarding courtesy cards. Bus routes and schedules, for instance, are useful for operational purposes but do not provide the necessary legal information needed in the aftermath of an incident. Accident weather conditions and vehicle registration details, although helpful, do not bear the primary significance that witness information does in a legal context.