GTIS Travel Time Report #2
Statistics for Agency:IL-TESTTSC Route:I-290

   Year        Month
Direction Segment Start Segment End
Total Length (mi)
  • Total length of all segments for the route listed (may include overlapping segments)
Total Travel Time, GTIS (min)
  • Average total travel time for all segments as reported by the Gateway Traveler Information System (GTIS)
Total Travel Time, NPMRDS (min)
  • Average total travel time for all segments as reported by the National Performance Management Research Data Set (NPMRDS)
Similarity 1 (%)
  • Based on Normalized Root Mean Square Error (NRMSE)
  • Shows how similar the values are / error in measurements
Similarity 2 (%)
  • Based on Mean Absolute Percentage Error (MAPE)
  • Shows how similar the values are / error in measurements
  • Deviation between data points in terms of percentage, effected largely by overforecasts
Abnormality (%)
  • Based on data lying outside of three standard deviations from the mean versus what would normally be expected
  • Affected by GTIS and NPMRDS evenly
Association (%)
  • Based on correlation coefficient between datasets
  • Can you predict one value based on the other
Inequality (%)
  • Based on Theil statistics for the data
  • Suite of four statistics commonly used to compare travel time data
  • Measuring covariance, variance, and bias
Bias (%)
  • Based on Theil bias statistic only
Omission (%)
  • Based on data availability
  • Large amounts of unavailable data results in lower score
Overall (%)
  • Weighted average of the seven intermediate statistics
Change From Last Month(%)
  • Percent change in overall score from previous month
EBLake Cook RdIL-8318.2110.1517.0659.1059.6187.2874.2258.541.93100.0061.87N/A
EBThorndale Ave Circle24.7328.2728.0992.2494.5489.7894.4277.0499.32100.0092.75N/A
EBLake Cook RdHarlem Ave29.0830.6629.8094.0795.2671.2890.7591.1976.58100.0090.31N/A
EBHarlem AveCircle8.209.3110.1283.7589.6799.4392.9653.1676.07100.0085.52N/A
EBWolf RdCircle13.4815.0216.5087.1691.3583.3596.9466.9050.95100.0084.44N/A
EBLake Cook RdWolf Rd23.9825.3923.5290.1991.4288.5079.9676.3434.23100.0083.31N/A
EBLake Cook RdI-90/94 / Circle37.2239.1939.8992.6195.4496.8690.2780.7194.29100.0093.23N/A
EBOverall154.91157.99164.9985.5988.1888.0788.5071.9861.91100.0084.49N/A
WBCircleHarlem Ave8.269.119.2394.1096.0937.8498.9185.8294.92100.0089.30N/A
WBCircleWolf Rd13.5514.4915.5075.0194.0798.7880.4572.3393.20100.0086.75N/A
WBCircleThorndale Ave24.7927.6226.8993.9895.1359.0694.7887.7679.36100.0089.37N/A
WBOverall46.6051.2251.6287.7095.1065.2391.3881.9789.16100.0088.47N/A
Overall201.51209.20216.6086.2290.2681.2289.3774.9870.08100.0085.68N/A
Cells are highlighted red when they decrease by more than