Using Truck GPS Data for Freight Performance Analysis in ...Aug 20, 2013 · Tara Sasank Sunkara &...
Transcript of Using Truck GPS Data for Freight Performance Analysis in ...Aug 20, 2013 · Tara Sasank Sunkara &...
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Using Truck GPS Data for Freight Performance Analysis in the Twin Cities
Metro Area (TCMA)
Chen-Fu Liao Minnesota Traffic Observatory (MTO)
Department of Civil Engineering TAP Meeting, Aug. 20, 2013
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Acknowledgements
MnDOT ATRI – Dan Murray & Jeff Short Tara Sasank Sunkara & Dayakar Reddy
Singana – Graduate Research Students TAP members MTO, Civil Engineering, UMN
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Outline • Project Progress TAP Meeting on May 8, 2013 Focus on Task #3 Performance Measures
• Data Summary & Analysis Results • Performance Measures (Mobility, Delay &
Reliability) • Truck Parking (Location & Duration) • Ongoing Effort and Next Step • Q & A
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Project Progress • Literature review (#1) – completed • Obtain data from ATRI (#2) - completed • Process data and generate performance
measures (#3) - completed • Process ATR/WIM/loop detector data (#4),
due 9/30/13 • Identify freight node, freight significant
corridor and congestion (#5), due 12/31/13 • Final report (#6), due 2/28/14
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St. Cloud
Mankato
Rochester
Key Freight Corridors in Twin Cities Metro Area
ATR Volume ATR Volume/Speed ATR Volume/Speed/Class WIM
County Road Interstate State Highway US Highway
HIGHWAY
Anoka Carver Chisago Dakota Hennepin Ramsey Scott Washington
COUNTY
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Data Field DS-A DS-B DS-C
Truck ID √ √ √ Timestamp √ √ √ Spot Speed √ NA √
Heading √ NA NA
Latitude √ √ √ Longitude √ √ √
Truck GPS Data
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GPS Data Summary Data Set DS-A DS-B DS-C Time Zone GMT/UTC GMT/UTC GMT/UTC Spot Speed? Yes No Yes
Static ID? Yes Rotate every 15 days Rotate every 24
hours
Data Accuracy Within 3 meters
Within 124-134 meters at 90%
probability and 129-150 meters at 95%
probability.
Within 13-56 meters at 90% probability
and 15-58 meters at 95% probability.
Snap Tolerance Used 50 m 150 m 50 m 2012 Number of Truck Trips 29,555 69,063 66,632 2012 Raw Data Size 40,500,081 4,840,339 28,290,687 2012 Snapped 12,287,134 1,246,536 8,593,449
2012 Snapped Percentage 30.3% 25.8% 30.4%
Average (SD) Sampling Time 10 (15) min 22 (28) min 1 (5) min
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Snapshot of Truck GPS Point Cloud (Dec. 2012)
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WIM Station Summary WIM ID 36 37 40 42
Route Name MN 36 I-94 US 52 US 61
County Name Washington Wright Dakota Washington
Direction EB WB NB SB
Mile Post 15 200 127 119
City Name Lake Elmo Otsego West St. Paul Cottage Grove
WIM Location Description
0.7 mi W of CSAH17 Lake Elmo Ave N) in
Lake Elmo
1.2 mi NW of CSAH19 (La Beaux Ave) in
Otsego
0.5 mi N of CSAH14 in
West St. Paul
0.4 mi S of TH95 (Manning
Ave S), S of Cottage Grove
WIM Type Volume / Speed / Class / Weight
2011 HCAADT 1,100 6,900 4,400 1,750
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Truck Speed Analysis
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Processed GPS vs. WIM Data
I-94 WB Mile Post 200
GPS WIM
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0
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70
80
0
10
20
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40
50
60
70
80
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Spee
d (M
PH)
Hour of Day
GPS vs. WIM37 Vehicle Speed Comparison
Probe Vehicle SD WIM37 Truck SD WIM37 Car SD
WIM37 Truck Mean WIM37 Car Mean Probe Vehicle Mean
I-94 WB @ Mile Post 200
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Anoka Carver Chisago Dakota Hennepin Ramsey Scott Washington
COUNTY
Weekday Mean Speed Dir = -1
(7AM 2012)
Mean Speed (MPH)
COUNTYCOUNTY
Weekday Mean Speed
Mean Speed (MPH)
St. Cloud
Mankato Rochester
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Anoka Carver Chisago Dakota Hennepin Ramsey Scott Washington
COUNTY
Weekday Mean Speed Dir =1 (7AM 2012)
Mean Speed (MPH)
COUNTYCOUNTY
Weekday Mean Speed
Mean Speed (MPH)
St. Cloud
Mankato Rochester
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Probe Vehicle Mean Speed by Month & Hour at I-94 WB Mile Post 200 (WIM37)
0
5
10
15
20
24
68
101240
50
60
70
Hour of Day
Probe Vehicle Mean Speed by Month and Hour at WIM37
Month
Speed
(MPH)
Hour of Day Month
Spee
d (M
PH)
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Heavy Vehicle Mean Speed by Month & Hour at WIM37 Station
0
5
10
15
20
24
68
101240
50
60
70
Hour of Day
WIM37 Mean Speed by Month and Hour
Month
Speed
(MPH)
Hour of Day Month
Spee
d (M
PH)
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Truck Volume Percentage
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0%
1%
2%
3%
4%
5%
6%
7%
8%
0 4 8 12 16 20 24
Volu
me
%
Hour of Day
Weekday Volume % by Hour I-94 WB Mile Post 200
(NWIM=900,114, NProbe=120,893)
WIM37 Volume % Probe Vehicle Volume % Probe Vehicle Spot Volume %
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0%
1%
2%
3%
4%
5%
6%
7%
8%
0 4 8 12 16 20 24
Volu
me
%
Hour of Day
Compariosn of Volume Percentage by Hour
ATR 382 Probe Vehicle
ATR 382 vs. GPS
ATR 382 - N of 180TH ST E, S of COATES ON US 52
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ATR Data Probe Vehicle Data Correlation Coefficient ID HCAADT Route ID Segment ID Count
188 2,600 29 19 43,199 0.83 191 2,150 33 88 11,961 0.94 200 7,900 24 77 129,595 0.87 335 3,450 34 74 19,741 0.93 341* 5,100 4 18 70,873 0.61 351 1,600 9 15 4,107 0.93 352 1,600 31 55 11,686 0.86 353 1,750 37 49 26,821 0.96
365** 1,700 26 31 4,933 0.51 381 1,350 14 7 22,530 0.99 382 2,700 29 67 42,469 0.97 388 830 25 3 2,576 0.84 400 1,600 9 15 2,841 0.81 422 NA 1 8 433 0.96
Correlation of GPS vs. ATR Hourly Volume %
* ATR341 - S OF CSAH35 (50TH ST N) IN OAKDALE (I-694) ** ATR365 - S OF CSAH116 (BUNKER LAKE BLVD NE) IN HAM LAKE (State Highway 65)
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WIM Data Probe Vehicle Data Correlation Coefficient ID HCAADT Route ID Segment ID Count
36 1,100 5 15 2,023 0.84
37 6,900 24 59 120,839 0.98
40 4,400 29 81 13,386 0.96
41 1,750 27 16 3,764 0.86
Correlation of GPS vs. WIM Hourly Volume %
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St. Cloud
Mankato
Rochester
Anoka Carver Chisago Dakota Hennepin Ramsey Scott Washington
COUNTY
GPS Truck Counts (7~8AM in 2012)
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Performance Measures
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( 𝑆𝑒𝑔𝑚𝑒𝑛𝑡 𝐿𝑒𝑛𝑔𝑡ℎ
𝑇𝑟𝑎𝑣𝑒𝑙 𝑆𝑝𝑒𝑒𝑑−𝑆𝑒𝑔𝑚𝑒𝑛𝑡 𝐿𝑒𝑛𝑔𝑡ℎ
𝑇ℎ𝑟𝑒𝑠ℎ𝑜𝑙𝑑 𝑆𝑝𝑒𝑒𝑑 ) × 𝐻𝐶𝐴𝐴𝐷𝑇𝑆𝑒𝑔𝑚𝑒𝑛𝑡
𝐻𝑜𝑢𝑟𝑆𝑒𝑔𝑚𝑒𝑛𝑡
Truck Daily Delay
𝑅𝐼80 =80 𝑡ℎ 𝑝𝑒𝑟𝑐𝑒𝑛𝑡𝑖𝑙𝑒 𝑇𝑟𝑎𝑣𝑒𝑙 𝑇𝑖𝑚𝑒
𝑇𝑟𝑎𝑣𝑒𝑙 𝑇𝑖𝑚𝑒 𝑎𝑡 𝑀𝑛𝐷𝑂𝑇 𝑆𝑝𝑒𝑐𝑖𝑓𝑖𝑒𝑑 𝑇ℎ𝑟𝑒𝑠ℎ𝑜𝑙𝑑 𝑆𝑝𝑒𝑒𝑑
Travel Time Reliability Index
Performance Measures
Threshold Speed = 45 MPH, Max Throughput Speed
Truck Mobility Percent of freight corridor miles in TCMA with average speed < 45 MPH in AM or PM Peak
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• Annual hours of truck delay in the TCMA • Truck delay by route & direction • Average delay in peak & off-peak hours • Average delay per mile • Cost of truck delay
TTI UMR (2011) $88.0 per hour ATRI (2011) $68.21 per hour
• Truck reliability index, 𝑅𝐼80
Performance Measures
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Anoka Carver Chisago Dakota Hennepin Ramsey Scott Washington
COUNTY
Threshold Speed (MPH)
Threshold Speed
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Average Speed
Average Speed AM Peak (5-10 AM)
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Average AM Speed < 45 MPH in TCMA Average AM Speed < 45 MPH in TCMA
Segments with Average Speed Below Threshold
Speed in AM Peak
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Average SpeedAverage Speed
Average Speed PM Peak (2-7 PM)
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Average PM Speed < 45 MPH in TCMA Average PM Speed < 45 MPH in TCMA
Segments with Average Speed Below Threshold
Speed in PM Peak
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Time Period (2012 Weekdays TCMA) AM Peak 5-10 AM
PM Peak 2-7 PM
# of Miles with Average Speed < 45 MPH 96 147
Total Miles of RTMC Stations in TCMA 774 774
Percentage of Miles < 45 MPH 12.4% 19.0%
Truck Mobility Measure
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Truck Delay
Threshold Speed = 45 MPH, Max Throughput Speed
( 𝑆𝑒𝑔𝑚𝑒𝑛𝑡 𝐿𝑒𝑛𝑔𝑡ℎ
𝑇𝑟𝑎𝑣𝑒𝑙 𝑆𝑝𝑒𝑒𝑑−𝑆𝑒𝑔𝑚𝑒𝑛𝑡 𝐿𝑒𝑛𝑔𝑡ℎ
𝑇ℎ𝑟𝑒𝑠ℎ𝑜𝑙𝑑 𝑆𝑝𝑒𝑒𝑑 ) × 𝐻𝐶𝐴𝐴𝐷𝑇𝑆𝑒𝑔𝑚𝑒𝑛𝑡
𝐻𝑜𝑢𝑟𝑆𝑒𝑔𝑚𝑒𝑛𝑡
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0
10
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60
0
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10
15
20
25
30
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Spee
d (M
PH)
Hou
rs
Mile Post
Average Daily Delay and Speed Delay Dir (+1) Delay Dir (-1) Speed Dir (+1) Speed Dir (-1)
I-694
I-35W
I-35E
HCAADT 5,900~7,400
HCAADT 6,300~15,100
I-94
/ I-4
94
Total Truck Delay = 22 (+1) + 44 (-1) = 66 Hours / Day
Stat
e H
ighw
ay 2
52
Stat
e H
ighw
ay 3
6
US
Hig
hway
61
Threshold Speed 45 MPH
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0
10
20
30
40
50
60
0
5
10
15
20
25
30
35
40
43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5
Spee
d (M
PH)
Hou
rs
Mile Post
Average Daily Delay and Speed Delay Dir (+1) Delay Dir (-1) Speed Dir (+1) Speed Dir (-1)
I-494
I-394
Stat
e H
ighw
ay 5
5
US
Hig
hway
212
I-35W
TH-1
00
Stat
e H
ighw
ay 7
7
HCAADT 5,500~8,400 HCAADT 4,150~7,400
I-35E
HCAADT 5,900~8,900
Total Truck Delay = 37 (+1) + 95 (-1) = 132 Hours / Day Threshold Speed 45 MPH
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Delay (hour)
Average Daily Delay AM Peak (5-10 AM)
Delay (hour)
Average Daily DelayAM Peak (5
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Delay (hour)
Average Daily Delay PM Peak (2-7 PM)
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Travel Time Reliability
𝑅𝐼80 =80 𝑡ℎ 𝑝𝑒𝑟𝑐𝑒𝑛𝑡𝑖𝑙𝑒 𝑇𝑟𝑎𝑣𝑒𝑙 𝑇𝑖𝑚𝑒
𝑇𝑟𝑎𝑣𝑒𝑙 𝑇𝑖𝑚𝑒 𝑎𝑡 𝑀𝑛𝐷𝑂𝑇 𝑆𝑝𝑒𝑐𝑖𝑓𝑖𝑒𝑑 𝑇ℎ𝑟𝑒𝑠ℎ𝑜𝑙𝑑 𝑆𝑝𝑒𝑒𝑑
Threshold Speed = 45 MPH, Max Throughput Speed
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Reliability Index AM Peak (5-10 AM)
RI_80
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RI_80
Reliability Index PM Peak (2-7 PM)
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Truck Stop and Parking
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Truck Stops / Parking
Spot/Space Speed < 5 MPH Stop Duration > 0.5 hour Travel Distance < 0.1 mile
Near Roadway
Spot Speed = 0 MPH Stop Duration > 0.5 hour
Near Rest Area
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Anoka Carver Chisago Dakota Hennepin Ramsey Scott Washington
COUNTY
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Anoka Carver Chisago Dakota Hennepin Ramsey Scott Washington
COUNTY
Stop Duration > 0.5 hr
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Truck Parking at I-94 Rest Area in Maple Grove
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Time (Hour)
Den
sity
Histogram of Parking Duration at the Rest Area on I-94 in Maple Grove
DS-A&C
Den
sity
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Truck Parking at I-94 Rest Area in West Lakeland
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Time (Hour)
Den
sity
Histogram of Parking Duration at the Rest Area on I-94 in West Lakeland
DS-A&C
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• Truck parking or rest facilities in TCMA • Loop detector data (#1222, 1171, 1172,
1157, 1158, 1598) • ATR Volume/Class/Speed data on stations:
188,191,200,335,341,351,352,353,365,381, 382,388,400 & 422
• Identify freight node & bottleneck • Final report
Ongoing Effort & Next Step
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