Abstract
More than 3000 taxis are used as the source to collect Floating Car Data (FCD). Ten samples with different sample sizes are taken at random from all the taxis. Average travel speeds of probe cars in an urban road network are calculated through these 10 samples. A nonparametric test is used to analyze the differences among the results calculated through the samples. Conclusion shows that average travel speed in a road network calculated by FCD under different samples is relatively stable. There are no significant differences among each sample.
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