GTIS Travel Time Report #2
Statistics for Agency:IL-TESTTSC Route:I-94

   Year        Month
Year: 2021 Month: January
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
EBDeerfield RdWilson Ave16.4018.7015.6978.9580.4060.3575.5068.9416.76100.0071.99N/A
EBLake Cook RdWillow Rd3.914.413.4971.1073.3316.6261.7466.0817.35100.0062.29N/A
EBDeerfield RdWillow Rd6.096.885.7276.8879.2510.1962.8568.1422.68100.0065.42N/A
EBDempster StMontrose Ave6.347.416.0875.4576.8252.6390.3069.8220.72100.0071.42N/A
EBLake Cook Rd (via Edens)I-290 / Circle (via Kennedy)22.6828.2824.6983.6085.2740.4197.5468.7721.51100.0075.04N/A
EBDeerfield RdDempster St10.5611.7610.0781.1382.9528.8466.3468.6820.43100.0069.45N/A
EBI-290/Circle (via Dan Ryan)I-80 (via Bishop Ford)22.8725.6124.6588.4290.9753.8582.3177.2488.90100.0085.08N/A
EBLake Cook RdMontrose Ave14.4816.4113.7078.2979.7364.8577.2468.9716.84100.0072.30N/A
EBLake Cook RdDempster St8.339.497.7776.3877.6833.3463.2566.7812.76100.0066.13N/A
EBDeerfield RdTouhy Ave13.0514.3912.4382.1884.0524.9865.6269.2721.86100.0069.73N/A
EBLake Cook RdI-9014.4829.3815.5410.198.9375.0650.0055.831.50100.0033.02N/A
EBDan Ryan / 95th St130th St5.647.006.2381.5586.1156.4980.5381.6655.42100.0079.32N/A
EBLake Cook RdTouhy Ave10.8112.0010.1379.4381.3221.7762.6868.3919.52100.0067.42N/A
EBDan Ryan / 95th StI-80 (Kingery Expy)11.0014.4610.9664.9967.0467.4267.5966.9517.01100.0064.90N/A
EBDan Ryan / 95th St154th St8.8212.129.3867.4769.8766.1374.5467.7219.38100.0067.11N/A
EBI-290/Circle95th St (via Locals)11.1211.5611.5758.6087.07100.0057.7257.49100.00100.0077.94N/A
EB29th St65th St (via Locals)4.475.214.3075.3375.5171.9289.8061.6527.47100.0072.79N/A
EBDan Ryan / 95th StStony Island Ext2.303.712.6151.7456.0333.3477.7065.7924.05100.0057.03N/A
EBOverall193.35238.78195.0371.2074.5748.7972.4067.6829.12100.0068.24N/A
WB95th St29th St (via Locals)8.338.087.3686.9587.9289.8550.0050.1443.37100.0077.05N/A
WBMontrose AveTouhy Ave3.854.153.4878.4679.9278.9962.0970.0621.27100.0072.84N/A
WBI-80Dan Ryan11.7417.0711.4248.2550.0236.5671.6961.148.68100.0052.37N/A
WB95th StI-290/Circle (via Locals)11.0710.8210.5685.4589.9387.2850.8996.9497.1086.3785.70N/A
WBI-90Dempster St5.726.745.2970.5172.0736.5660.7165.8612.82100.0063.24N/A
WBI-80130th St6.158.615.2534.7734.9274.4959.8459.653.71100.0047.19N/A
WBI-80 (via Bishop Ford)I-290/Circle (via Dan Ryan)22.8729.3723.2172.2373.0775.7878.6565.388.74100.0069.18N/A
WBI-80Stony Island Ext9.0712.438.2447.6948.4175.1459.3361.415.64100.0054.18N/A
WBMontrose AveWillow Rd10.8811.3310.1684.9687.9323.7061.7774.8841.52100.0073.41N/A
WBI-290 / Circle (via Kennedy)Lake Cook Rd (via Edens)22.8424.4222.6189.6891.4360.3571.3578.3139.89100.0080.27N/A
WBMontrose AveDeerfield Rd15.3518.1114.4473.1274.3621.7765.6865.3410.54100.0063.20N/A
WBMontrose AveLake Cook Rd14.3515.3513.4883.6085.8124.9864.2171.5728.43100.0071.27N/A
WBMontrose AveDempster St6.036.505.5380.2382.1137.8461.3170.5522.35100.0069.79N/A
WBI-80154th St2.925.052.161.001.0037.2058.7053.892.44100.0025.72N/A
WB65th St29th St (via Locals)4.545.083.9969.7270.9494.4366.2462.6220.08100.0069.50N/A
WBOverall155.70183.13147.2167.1168.6656.9962.8367.1824.4499.0964.99N/A
Overall349.05421.91342.2469.3471.8852.5268.0567.4526.9999.5966.77N/A
Cells are highlighted red when they decrease by more than -6.51 percentage points which represents the 5th percentile of monthly changes at this aggregation from 2017-2024.
Back to IL-TESTTSC Table