GTIS Travel Time Report #2
Statistics for Agency:IL-TESTTSC Route:I-55

Year Month

Year: 2023 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
NB	Dan Ryan	King Dr	1.24	1.99	1.25	23.10	31.11	89.08	51.37	49.08	41.37	99.13	46.55	1.14
NB	I-294	Dan Ryan	15.53	18.51	16.36	83.09	86.29	52.63	96.53	72.97	39.43	100.00	78.50	-1.57
NB	I-80	I-355	18.50	16.41	17.11	94.73	95.68	70.63	93.26	78.86	39.47	100.00	85.82	-3.18
NB	I-294	IL-43 (Harlem Ave)	6.59	7.83	6.65	78.74	81.30	67.42	88.12	72.94	29.44	100.00	75.80	-2.03
NB	I-294	Cicero Ave	9.88	12.22	10.74	81.35	85.00	51.34	95.75	75.92	45.71	100.00	78.46	-1.97
NB	I-80	Dan Ryan	42.10	40.12	41.79	93.34	95.14	52.63	95.98	86.91	64.08	100.00	87.08	-0.22
NB	IL-43 (Harlem Ave)	Dan Ryan	8.95	11.22	9.81	80.13	84.45	40.41	97.25	73.94	47.61	100.00	77.07	0.19
NB	I-355	I-294	8.26	9.55	8.46	82.57	86.45	43.63	86.22	73.87	45.94	100.00	77.22	-0.07
NB	I-294	King Dr	16.84	19.80	17.61	84.09	87.00	53.92	96.42	73.71	39.00	100.00	79.08	-1.98
NB	I-355	Dan Ryan	22.99	27.55	24.06	82.27	85.30	53.27	95.56	70.14	32.85	100.00	77.08	-1.38
NB	I-294	Kedzie Ave	12.05	14.84	13.27	83.17	87.21	48.13	96.45	75.88	50.50	100.00	79.69	-2.45
NB	Overall		162.94	180.04	167.10	78.78	82.27	56.65	90.26	73.11	43.22	99.92	76.58	-0.87
SB	Dan Ryan	I-355	24.00	28.89	24.54	78.40	81.61	30.13	95.71	73.10	32.80	100.00	73.18	-2.82
SB	Dan Ryan	I-80	42.10	49.94	41.68	78.24	79.71	38.48	94.65	68.69	17.01	100.00	71.37	-1.72
SB	Dan Ryan	Harlem Ave	8.89	12.00	10.58	82.35	84.66	23.70	98.72	76.94	42.05	100.00	75.90	-0.21
SB	Dan Ryan	Cicero Ave	5.65	8.30	7.25	77.75	83.19	24.27	98.45	78.64	57.32	100.00	76.10	2.73
SB	King Dr	Dan Ryan	1.24	2.00	0.97	1.00	1.00	100.00	51.93	35.10	65.12	99.05	35.62	5.84
SB	Dan Ryan	I-294	15.65	20.83	17.40	77.11	78.81	30.13	97.41	71.53	25.51	100.00	71.44	-2.24
SB	I-355	I-80	18.50	21.59	17.54	76.00	76.53	73.14	77.27	65.53	7.58	100.00	70.48	-2.00
SB	Dan Ryan	Kedzie Ave	3.48	5.75	4.52	65.59	71.80	1.00	99.50	57.51	38.07	100.00	63.95	-2.51
SB	Overall		119.51	149.30	124.48	67.06	69.66	40.10	89.20	65.88	35.68	99.88	67.25	-0.87
Overall			282.45	329.34	291.58	73.84	76.96	49.68	89.82	70.07	40.04	99.90	72.65	-0.87

Cells are highlighted red when they decrease by more than -7.92 percentage points which represents the 5th percentile of monthly changes at this aggregation from 2017-2025.
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