Abstract: To more accurately output a signal related to a source of particulate matter floating in the atmosphere, an analyzer is equipped with a mass concentration measuring unit, an element analysis unit, and a source-related signal output unit. The mass concentration measuring unit measures the mass concentration of fine particulate matter (FP) in the atmosphere. The element analysis unit analyzes an element contained in the FP. The source-related signal output unit outputs a signal related to the source of the FP on the basis of the mass concentration measurement result from the mass concentration measuring unit, and the analysis result for the element contained in the FP from the element analysis unit.

Abstract: An on-road driving test system includes a determination condition storing unit, a vehicle speed storing unit, a predicted vehicle speed distribution calculating unit, and a determining unit. The determination condition storing unit stores a determination condition including at least a vehicle speed distribution condition for determining whether an on-road driving test is valid. The vehicle speed storing unit stores an actual measured vehicle speed actually measured at each geographical point by one or more vehicles. The predicted vehicle speed distribution calculating unit calculates a predicted vehicle speed distribution based on the actual measured vehicle speed, the predicted vehicle speed distribution being a vehicle speed distribution predicted to be obtained if a vehicle is driven on a set driving route. The determining unit determines whether the predicted vehicle speed distribution satisfies the vehicle speed distribution condition.

Abstract: To more accurately output a signal related to a source of particulate matter floating in the atmosphere, an analyzer is equipped with a mass concentration measuring unit, an element analysis unit, and a source-related signal output unit. The mass concentration measuring unit measures the mass concentration of fine particulate matter (FP) in the atmosphere. The element analysis unit analyzes an element contained in the FP. The source-related signal output unit outputs a signal related to the source of the FP on the basis of the mass concentration measurement result from the mass concentration measuring unit, and the analysis result for the element contained in the FP from the element analysis unit.