Which of the following is a limitation of traffic preemptive devices?

The limitation of traffic preemptive devices is that they can have a short transmit distance, which can cause a delay in their effectiveness. This means that if the device does not transmit far enough, it may not communicate effectively with traffic signals or other devices that need to respond to the emergency or situation at hand. In scenarios like emergency vehicle responses, every second counts; therefore, a limited transmission range can hinder the timely response needed to clear intersections or manage traffic effectively.

The other options describe characteristics that do not accurately represent limitations. For example, claiming unlimited transmit distance does not hold true, as technical constraints can restrict range. Similarly, stating that preemptive devices always grant priority over activated crosswalks overlooks scenarios where pedestrian safety must weigh in, thus not making it a definitive limitation. Lastly, the ability to provide feedback when activation fails is actually a strength of the system, as it improves reliability and response planning.