What is the definition of a composite vehicle monitor?

A composite vehicle monitor refers to a diagnostic strategy that captures data from a vehicle during a one-trip test. This type of monitoring assesses the performance of various emissions-related systems by evaluating the collected data all at once, allowing for a streamlined and efficient determination of the vehicle's readiness and performance based on that single trip.

In this context, the one-trip test effectively records the necessary parameters and checks for any violations of emissions standards in a single journey, making it advantageous for detecting problems that may not appear in a standard two-trip test, where the vehicle's operation is evaluated over two separate trips. The focus is on simplifying the diagnostic process while ensuring that all significant systems are monitored.

The other options do not align with the definition of a composite vehicle monitor. A two-trip test involves data collection over two different driving cycles and is often more comprehensive but less relevant in this scenario. Continuous monitoring refers to an ongoing assessment of vehicle systems without the focus on a singular trip. An emissions discharge test typically measures the amount of pollutants emitted but does not directly relate to the composite vehicle monitoring strategy.