Travel time is one of the most important traffic data. Although it has been studied to estimate it for a long time, there are still many problems about accuracy and measuring delay. So, we have developed an algorithm to match vehicles based on their characteristics, which are measurable by popular vehicle detectors and to estimate accurate travel time with short delay. As a result of evaluation, we demonstrate that this algorithm can estimate accurate travel time to be practical. Moreover, we improve this algorithm to be appropriate for practical use and evaluate it.
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