Fire apparatus with electronic or electric engine throttle controls must include a ___________________ system.

The inclusion of an interlock system in fire apparatus equipped with electronic or electric engine throttle controls is crucial for ensuring safe and reliable operation. An interlock system serves as a safety feature that prevents accidental activation of the throttle or other critical functions under certain conditions. For instance, the interlock may prevent the engine from revving up when the vehicle is in neutral or ensure that the apparatus cannot be put into drive until specific safety checks have been completed.

This added layer of safety helps to prevent operational errors that could lead to accidents, especially in the high-stress environments faced by emergency responders. It underscores the importance of having mechanisms in place that promote responsible use of the apparatus, especially when relying on modern electronic systems.

While valving, throttle, and control systems are all important components of fire apparatus, they do not specifically provide the same level of safety assurance as an interlock system. An interlock mechanism directly addresses operational safety and efficiency in vehicles that use advanced throttle controls.