2015 Congestion & Mobility Report ARENAC CLARE GLADWIN Chapter 2 HURON BAY ISABELLA MIDLAND TUSCOLA BAY SANILAC SAGINAW REGION GRATIOT LAPEER GENESEE ST. CLAIR SUMMARY SHIAWASSEE Performance Measures Definitions .................1 Regional User Delay Cost Per Mile ...................3 Regional Congestion Hours .................................4 Ranked UDC by Location .......................................6 Mobility Measures: I-69 Corridor ......................8 Mobility Measures: I-75 Corridor ...................18 Mobility Measures: I-94 Corridor ...................28 Mobility Measures: I-475 Corridor ................32 Mobility Measures: I-675 Corridor ................40 Mobility Measures: US-10 Corridor ..............46 Mobility Measures: US-23 Corridor ..............52 Mobility Measures: US-127 Corridor ...........56 > CONGESTION & MOBILITY REPORT > Freeway Performance Measures Chapter 2 Performance Measures Definitions Delay No Delay Delay POSTED SPEED 60 MPH* ACTUAL SPEED Total delay > Delay is calculated by taking the difference between actual speeds when they fall below 60 mph and the posted speed limit for freeways posted at 70 mph. This is toPOSTED take out SP EEtheD delay caused by the lower averageDelay speeds from commercialNo Delay vehicles. Delay Recurring POSTED SPEED 60 MPH Total delay per mileRecurring > Delay per mile is calculated by taking the total delay and dividing it by the length of the freeway. This was performed for each route in each county. AVERA60 MPHGE SPEED Non-recurring Non-recurring/recurring delay > Non-recurring delay is calculated by takingACTUAL the difference SPEED between the actual speed (any time the speed falls below 60 mph) and the averageACTUAL SPEEDspeed. Recurring is measured by taking the difference of the total delay and non-recurring delay. Northbound Travel Times Avg 75th % POSTED95th SP %EED 16.0 Recurring 60 MPH 14.0 Recurring * AVERAGE SPEED 12.0 Small dierence Large dierence between average Non-recurring between average 10.0 and 95th percentile ACTUALand 95th SPEED percentile travel times travel times 8.0 Minutes 6.0 User Delay Cost > User Delay Costs (UDC) is calculated by multiplying delay x hourly volume per hourly user cost. Delay4.0 is calculated by taking the difference between actual speeds when they fall below 60 Northbound Travel Times Avg 75th % 95th % mph and the posted speed limit. Hourly volumes are derived from Average Daily Traffic (ADT) and Com- 16.02.0 Reliable Unreliable mercial Average Daily Traffic (CADT). Hourly user costs are based on Federal Highway Administration 0.0 (FHWA) publication14.0 number FHWA-SA-98-079, “Life-Cycle Cost Analysis in Pavement Design.” 12.0 Small dierence Large dierence 1:00 PM PM 2:00 PM 3:00 4:00 PM 4:00 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM 1:00 AM 2:00 AM 3:00 AM 4:00 AM AM 5:00 6:00 AM 7:00 AM 8:00 AM 9:00 AM 12:00 PM 10:00 PM 11:00 PM Congestion > Congestion12:00 AM between averageis calculated as the number10:00 AM 11:00 AM of hours below 45 mphbetween per average Traffic Message 10.0 Channel (TMC) segment.and 95thA TMC percentile segment is a standardTime of Day for delivering real-timeand traffic 95th percentile information. They travel times travel times vary from tenths8.0 of a mile long to several miles long. Minutes 6.0 Note: During 2015, we noticed a significant reduction in user delay cost on certain routes. We believe this may be an artifact of the threshold4.0 used to determine the presence of delay. In prior years, the average speeds on these routes were around 60 MPH,2.0 which trips the delayReliable calculation threshold. In 2015 averageUnreliable speeds were above 60 MPH, which reduced the number of times user delay was calculated. 0.0 * On segments with a speed limit of 55 mph, delay is calculated when speeds fall below 55 mph. 1:00 PM PM 2:00 PM 3:00 4:00 PM 4:00 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM 1:00 AM 2:00 AM 3:00 AM 4:00 AM AM 5:00 6:00 AM 7:00 AM 8:00 AM 9:00 AM 12:00 PM 10:00 PM 11:00 PM 12:00 AM 10:00 AM 11:00 AM 1 Time of Day Delay No Delay Delay POSTED SPEED 60 MPH ACTUAL SPEED POSTED SPEED > CONGESTION & MOBILITY REPORT > Freeway PerformanceRecurring Measures 60 MPH Recurring AVERAGE SPEED Non-recurring Chapter 2 Performance Measures DefinitionsACTUAL SPEED Northbound Travel Times Avg 75th % 95th % 16.0 14.0 12.0 Small dierence Large dierence between average between average 10.0 and 95th percentile and 95th percentile travel times travel times 8.0 Minutes 6.0 4.0 2.0 Reliable Unreliable 0.0 1:00 PM PM 2:00 PM 3:00 4:00 PM 4:00 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM 1:00 AM 2:00 AM 3:00 AM 4:00 AM AM 5:00 6:00 AM 7:00 AM 8:00 AM 9:00 AM 12:00 PM 10:00 PM 11:00 PM 12:00 AM 10:00 AM 11:00 AM Time of Day Travel Time Reliability > A measure of travel time consistency over a period of time. When travel times are unreliable, customers are more likely to experience unexpected delays. Travel times are shown to be reliable when the 95th percentile travel time remains close to the average travel time. 75th Percentile Travel Time > The amount of time a customer should budget to be on-time three out of four days (75% of the time). 95th Percentile Travel Time > The amount of time a customer should budget to be on-time nineteen out of twenty days (95% of the time). The 95th percentile travel time is also known as the planning time. Note: May through September were used for the summer reliability calculations. 2 2015> CONGESTION Bay & MOBILITY Region REPORT > Freeway Performance Measures User Delay Cost Per Mile Figure 1. 2015 Bay Region user delay cost per mile 4Chapter 2 2015 Bay Region User Delay Cost Per Mile 4 ®210 ®2127 ¨¦§675 ¨¦§75 ®210 ®2127 ¨¦§475 ¨¦§69 ¨¦§675 ®223 ¨¦§75 ¨¦§475 ¨¦§69 ®223 2015 UDC per Mile < $50,000 $50,000 - $100,000 > $100,000 2015 UDC per Mile < $50,000 3 $50,000 - $100,000 > $100,000 > CONGESTION & MOBILITY REPORT > Freeway Performance Measures Chapter 2 Figure 2. 2015 Bay Region congestion hours northbound/eastbound 2015 Bay Region Congestion Hours Northbound/Eastbound 4 ®210 ®2127 ¨¦§675 ¨¦§75 ¨¦§475 ¨¦§69 ®223 2015 Congestion Hours < 50 50 - 100 > 100 4 > CONGESTION & MOBILITY REPORT > Freeway Performance Measures Figure 3. 2015 Bay Region congestion hours southbound/westbound Chapter 2 2015 Bay Region Congestion Hours Southbound/Westbound 4 ®210 ®2127 ¨¦§675 ¨¦§75 ¨¦§475 ¨¦§69 ®223 2015 Congestion Hours < 50 50 - 100 > 100 5 > CONGESTION & MOBILITY REPORT > Freeway Performance Measures Chapter 2 Figure 4. 2015 Bay Region UDC Data 2012-2014 Average 2015 UDC Per UDC Per Rank Location (Route, County) Rank Location (Route, County) Mile Mile 1 $101,340 I-69 Genesee Co. 1 $53,555 I-69 Genesee Co. 2 $93,437 I-675 Saginaw Co. 2 $49,737 I-75 Genesee Co. 3 $87,720 US-23 Genesee Co. 3 $38,414 US-23 Genesee Co. 4 $87,270 I-475 Genesee Co. 4 $35,506 I-75 Saginaw Co. 5 $85,893 I-75 Genesee Co. 5 $34,951 US-10 Bay Co. 6 $62,157 I-75 Saginaw Co. 6 $25,801 I-675 Saginaw Co. 7 $48,099 US-10 Bay Co. 7 $21,166 I-94 St. Clair Co. 8 $45,470 I-94 St. Clair Co. 8 $20,437 I-69 St. Clair Co. 9 $32,201 I-69 Lapeer Co. 9 $20,105 I-475 Genesee Co. 10 $27,043 I-75 Bay Co. 10 $11,387 I-75 Bay Co. 11 $23,856 I-69 St. Clair Co. 11 $6,870 I-69 Lapeer Co. 12 $23,154 I-69 Shiawassee Co. 12 $6,340 I-69 Shiawassee Co. 13 $12,475 US-127 Gratiot Co. (70 mph section) 13 $5,493 US-127 Gratiot Co. (70 mph section) 14 $10,076 US-10 Midland Co. 14 $4,759 I-75 Arenac Co. 15 $8,999 I-75 Arenac Co. 15 $3,223 US-10 Isabella/Clare Co. (70 mph section) 16 $8,234 US-127 Isabella Co. 16 $2,060 US-127 Isabella Co. 17 $6,897 US-10 Isabella/Clare Co. (70 mph section) 17 $1,125 US-10 Midland Co. 18 $3,224 US-127 Clare Co. 18 $835 US-127 Clare Co. 2012-2014 Average 2015 Total Total Rank Location (Route, County) Rank Location (Route, County) UDC UDC 1 $4,864,323 I-69 Genesee Co. 1 $2,785,283 I-75 Genesee Co. 2 $4,809,999 I-75 Genesee Co. 2 $2,570,645 I-69 Genesee Co. 3 $3,232,170 I-75 Saginaw Co. 3 $1,846,319 I-75 Saginaw Co. 4 $3,141,716 I-475 Genesee Co. 4 $1,287,503 I-69 St. Clair Co. 5 $2,193,006 US-23 Genesee Co. 5 $973,634 I-94 St. Clair Co. 6 $2,091,620 I-94 St. Clair Co. 6 $960,358 US-23 Genesee Co. 7 $1,868,735 I-675 Saginaw Co. 7 $873,772 US-10 Bay Co. 8 $1,771,079 I-69 Lapeer Co. 8 $723,787 I-475 Genesee Co. 9 $1,703,717 I-75 Bay Co. 9 $717,383 I-75 Bay Co. 10 $1,502,939 I-69 St. Clair Co. 10 $516,021 I-675 Saginaw Co.