This paper summarizes the findings from five years of commercial probe data validation conducted in the United States through the I-95 Corridor Coalition Vehicle Probe Project (VPP), focusing specifically on how travel time data quality on arterial facilities has changed since an initial study evaluated it during 2013 and 2014. Thirteen separate arterial validation efforts were conducted from 2014 to 2018 as part of VPP Phase II (VPPII), and data quality from three commercial probe vendors was evaluated through comparison with reference travel time data obtained via re-identification technology. Using two evaluation techniques—a traditional analysis that summarizes the accuracy of precision and bias error metrics, and a slowdown analysis that quantifies each vendor’s ability to capture major slowdown events—the results from VPPII studies are compared with data quality previously observed from nine validation efforts during Phase I (VPPI) from 2013 to 2014. The results show clear improvement in VPPII accuracy levels and suggest that commercial travel time data sets are suitable for many planning and operations applications.

本文总结了通过 I-95 走廊联合车辆探测项目 (VPP) 在美国进行的五年商业探测数据验证的结果，特别关注自初步研究评估以来，主干道设施的行程时间数据质量如何变化它在 2013 年和 2014 年期间进行了 13 次独立的动脉验证工作，作为 VPP 第二阶段 (VPPII) 的一部分，从 2014 年到 2018 年，通过与通过重新识别技术获得的参考旅行时间数据进行比较来评估来自三个商业探针供应商的数据质量. 使用两种评估技术——一种总结精度和偏差误差指标准确性的传统分析，