What aspect is most important when communicating delays to passengers?

Communicating estimated arrival times to passengers is crucial because it helps manage their expectations and reduces anxiety during delays. Passengers generally want to know how long they will be waiting and when they can expect to arrive at their destinations. Providing an estimated time gives them a clear indication of the situation and allows them to plan accordingly, whether that means rearranging their schedules or simply preparing for the wait.

The other aspects, such as the driver's personal history, vehicle specifications, and outside weather conditions, while they can be relevant to a broader discussion of travel, do not directly address the immediate concern of passengers waiting for their arrival. Passengers typically prioritize information that directly affects their journey over details that may not influence their immediate experience or comfort. Thus, focusing on arrival times is the most effective way to communicate with passengers about delays.