What does 'run on' mean in vehicle operation?

The term 'run on' in vehicle operation refers to a situation where a vehicle continues to move after the engine is turned off. This typically happens when there is enough momentum, or in some instances, when fuel continues to be injected into the engine after the ignition system is disabled.

In the context of the answer provided, understanding that realizing pressure on pedals will not result in a change of gear directly relates to the concept of 'run on.' When a driver experiences run-on, the vehicle may still travel forward due to its previous speed, and pressing the accelerator or shifting gears becomes irrelevant at that moment, as the vehicle's operation is no longer directly controlled by the driver.

Other choices do not accurately encapsulate the operational principle of run-on. For instance, the notion of a vehicle being able to travel without fuel does not pertain to the mechanics of run-on, nor does it connect with gear changes or vehicle motion dynamics after shutting down. Likewise, options regarding driving in reverse or limiting the technique to manual vehicles misinterpret the essence of what 'run on' entails. Understanding these nuances allows for better safety and operational awareness when dealing with vehicle dynamics.