What are on-board computer systems used by many fire departments called?

On-board computer systems used by many fire departments are referred to as mobile data terminals (MDTs). These systems are integral to modern firefighting and emergency response operations, providing real-time access to critical information. They allow personnel to receive dispatch information, access maps, and retrieve building pre-plans, hydrant locations, and other essential data directly from their apparatus while on the move.

Mobile data terminals enhance situational awareness and operational efficiency, enabling responders to make informed decisions rapidly during an incident. This immediate access to data supports better communication among team members and increases overall response effectiveness.

The other options, while related to emergency services, do not specifically refer to the on-board computer systems in the same sense. Communications terminals generally pertain to equipment used for verbal communication, incident command systems focus on the organization and management of an incident, and dispatch software is more about the backend systems that assign and track calls rather than the mobile systems used in the field.