Route Match Extension API Developer's Guide

Trace Point Density

GPS receivers roughly generate one GPS position per second. However, due to mobile network bandwidth and/or cost limitations or processing capability limitations, this density is not always available. The Route Match Extension API is designed to work with trace densities between one per second up to one every few minutes. The match quality is in general better for high trace point density. The bigger the gaps between any two trace points, the higher the risk that the assumed route in between them does not correspond to reality, and also the heuristic distinction between small detours actually driven versus just GPS coordinate outliers or shifts is more difficult.