using aggregated federal data and local shipping data to model freight alabama
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Using Aggregated Federal Data and Local Shipping Data to Model Freight Alabama. Michael Anderson Civil Engineering The University of Alabama in Huntsville. Modeling Goals. Develop a freight OD matrix - PowerPoint PPT PresentationTRANSCRIPT
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Using Aggregated Federal Data and Local Shipping Data to Model
Freight Alabama
Michael Anderson
Civil Engineering
The University of Alabama in Huntsville
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Modeling Goals
• Develop a freight OD matrix
• Freight profile: scalable to the State, MPO or region to identify potential freight projects
National Freight Data
Local surveys
Regional, State and MPO Level Analysis
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Integrated Freight Planning Framework
3
FAF 2Data
FAZ
FAZ
FAZ
FAZ
FAZ
FAZ
FAZ
FAZ
FAZ
FAZ
TRANPLANDistribution
&VolumesInput to
ATIM
TRANPLAN/ ATIM
Interface
SystemPerformance
Measures
TRAN-PLAN
ATIM
Freight Analysis Zones
FAZ Forecast by Mode
Planning Factors – Value of Shipments, Personal Income, Population/Employment
Industry Sector Analysis
(Mode Dependent)
Passenger Car Data
Trip Generation
Trip Distribution Modal Split/ Assignment
Industry Surveys
Version 1.6
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Statewide Application: Alabama
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Freight Analysis Framework, Ver. 2
• 114 Zones
• 17 Ports of Entry
• 43 Commodities
• 7 Modes
• Disaggregation to county level Based on Personal Income and VOS
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Pass Through Freight
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Alabama IE, EI and EE Flows
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Trucks/day ALDOT
Tons/year model Tons/day
Tons/truck
Pounds/ truck
I65 7,768 52,071,250 142,661 18.37 36,730
I59 4,758 47,408,170 129,885 27.30 54,601
I20 14,531 38,163,040 104,556 7.20 14,390
I85 6,070 42,259,400 115,779 19.07 38,149
I10E 6,334 13,234,480 36,259 5.72 11,450
I10W 9,979 22,101,760 60,553 6.07 12,136
I59W 8,875107,198,80
0 293,695 33.09 66,188
Initial Validation at State Boundary
Weighted average of tons per truck crossing Alabama’s borders is 15 tons. Differences in weight results from differences in commodities being shipped different directions.
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Application of FAF2 – Statewide Model
• Internal to Zone 1• Internal to Zone 2• From Zone 1 to Zone 2• From Zone 2 to Zone 1 • From Zone 1 to locations outside
Alabama• From Zone 2 to locations outside
Alabama• From outside Alabama to Zone 1• From outside Alabama to Zone 2
• National Pass-Through
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FAF2 - Alabama Statewide Model
R2 = 0.8159
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
0 1000 2000 3000 4000 5000 6000 7000 8000
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MPO Application: Mobile, AL
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Mobile, AL: Convergence of two Interstates:I-10 running EWI-65 running NS
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Mobile’s Freight Reality
• Class A Railroads in Mobile • Mouth of Alabama’s inland Waterways; 4500
miles of system via Tenn-Tom• 25 steam ship agencies• 4 foreign trade zones• 60 trucking companies• 4 bulk liquid terminals• 13 warehouses, 9 of which are US Customs
bonded• 16 shipbuilding or ship repair companies
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Freight Modeling
• None!
• State of Alabama used “estimated” percentages for truck trips
• Truck trips were estimated percentage as a Non Home Based trips
• Trucks are not factored in the External to External trips, or Internal / External Trips
• No other mode than cars are modeled
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Local Data
• What can industry input provide when developing a long-term freight plan?– Gain insight from companies to plan for
pattern shifts, network realignments, or current industry trends.
– Build relationships with business leaders so they become a vital source of planning intelligence.
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Data Collection Tool
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Key Data Points1. Business description2. Number of employees3. Mode of shipments4. Number of deliveries
received by mode weekly5. Number of shipments by
mode generated weekly6. Origins of inbound
deliveries (at least compass direction)
7. Destinations of outbound shipments (at least compass direction)
8. Size of shipment by mode (Full load, Less than full load)
9. Weight of shipments in pounds by mode (average/normal)
10. Size of facility in square feet (under roof)
11. Expansion plans for forecast period (5 years)
12. Value of Goods (dollars)13. Actual annual volume of
goods for prior year (should approximate Q5+Q6 x 52)
14. Forecasted annual volume of goods for next year
15. Transportation problems at their location
16. Transportation problems in the region
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Conclusions to Local Data Collection
The information gathered through this process, along with information on commodity flows from around the country, allowed the MPO to produce an intelligent estimate of freight movement within the study area and resulted in a validated transportation model.
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Trip Purposes
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Mobile Freight Assignment
• Combination of FAF2 data and Regional Freight Profile
• Freight OD Matrix Entered as Preload
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Overall Conclusions
• New Ability to Model Truck Trips– Scalable : Regional, Statewide, Local
• Use of FAF2 forecasts Local Freight Data
• Analyze projects considering freight impacts
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Questions?
Michael Anderson
256-824-5028
Office for Freight, Logistics & Transportation