1. Assessing Strengths and Limitations of a Statewide Tour Based Freight Model Using Scenario Analysis in Maryland By
Colin Smith, RSG
Sabya Mishra, University of Memphis
Subrat Mahapatra, Maryland State Highway Administration
Carlos Carrion, University of Maryland
Lei Zhang, University of Maryland
Presentation at 2017 planning applications conference, Raleigh, May 16, 2017

2. Outline Overview and needs of freight model
Structure of the statewide freight model
Scenarios
Initial Results
Ongoing and future work

3. Overview Existing 4-step travel demand model
Maryland Statewide Transportation Model (MSTM)
Incorporate behavioral freight demand model
National supply chain
Tour based models
Commercial vehicle models
Generate trip diary for further use in microscopic models

4. Overall model design Overall Model Structure
Freight model is designed Integration with two models – the Maryland Statewide Model and the BMC regional model
Integrating demand model components for freight and non-freight trucks, and freight networks
Supply Chain Model
Model annual commodity movements and shipment flows by mode, and includes the firm synthesis model
Freight Truck Touring Model
Models pick up and delivery of freight shipments within the region
Commercial Vehicle Model
Models commercial vehicle movements in the region, all purposes other than freight shipment delivery to businesses

5. Model Design Conversion to modal trip tables
Maryland Statewide Model (MSTM)
Conversion to modal trip tables
Passenger Model
National Supply Chain (Firms, Shipments, Modes)
National/Statewide Networks
BMC Regional Model (InSITE)
Passenger Model
Regional Freight Truck Touring Model
Regional Networks
Regional Commercial Vehicle Touring Model
Conversion to truck trip tables

6. Model Spatial Structure

7. Model Networks

8. Data Development Summary
National data for model inputs
Firm locations from CBP
I/O data from BEA
Commodity flow data from FAF
Shipment data from CFS
Modal networks
Borrowed data for model estimation, calibration and validation
Ohio establishment data
Texas establishment data (previously used to estimate models)
Local data for model inputs, calibration, validation:
- Model highway networks
ATRI GPS data for MD
Traffic counts
Distribution and intermodal center location data

9. Commodity Flow Data

10. ATRI GPS ata

11. Scenario Analysis Scenario-1 Scenario-2 Scenario-3
Freight network impacts because of shared and collaborative urban deliveries
Scenario-2
Freight diversion of potential commodities to non-truck modes
Scenario-3
Capacity enhancement of potential long-distance non-urban corridors to alleviate congestion from urban corridors

12. Scenario-1 (Example) Independent distribution systems 48 customers
4 suppliers
40*40 km grid
6 day operation
8 customers/day
2018 km by 4 veh

13. Scenario-1 (Example) Collaborative distribution systems
Goods transfer between suppliers first

14. Scenario-2 (Model Components)
Parameter
Description
original Value
REVISED Value
BulkHandFee
Handling charge for bulk goods ($ per ton)
1.00
WDCHandFee
Warehouse/‌DC handling charge ($ per ton)
15.00
IMXHandFee
Intermodal lift charge ($ per ton) 10
TloadHandFee
Transload charge ($ per ton; at international ports only)
10.00
AirHandFee
Air cargo handling charge ($ per ton)
20.00
WaterRate
Line-haul charge, water ($ per ton-mile)
0.005
CarloadRate
Line-haul charge, carload ($ per ton-mile)
0.03
IMXRate
Line-haul charge, intermodal ($ per ton-mile)
0.04
0.025
AirRate
Line-haul charge, air ($ per ton-mile)
3.75
LTL53rate
Line-haul charge, 53 feet LTL ($ per ton-mile)
0.08
FTL53rate
Line-haul charge, 53 feet FTL ($ per ton-mile)
LTL40rate
Line-haul charge, 40 feet LTL ($ per ton-mile)
0.10
FTL40rate
Line-haul charge, 40 feet FTL ($ per ton-mile)
WaterMPH
Water speed (mph)
5.00
RailMPH
Rail speed (mph)
22.50
LHTruckMPH
Line-haul truck speed (mph)
60.00
DrayTruckMPH
Drayage truck speed (mph)
45.00
AirMPH
Air speed (mph)
500.00
ExpressSurchar ge
Surcharge for direct/‌express transport (factor)
1.50
BulkTime
Handling time at bulk handling facilities (hours)
72.00
WDCTime
Handling time at warehouse/‌DCs (hours)
24.00
IMXTime
Handling time at intermodal yards (hours) 20
TloadTime
Handling time at transload facilities (hours)
12.00
AirTime
Handling time at air terminals (hours)
Cost parameter by mode
Sources
Value ($/ton-mile)
Truck
Leachman (2005), EIA
Rail
Leachman (2005), EIA, CSX, UP
0.030
Air
Leachman (2005), UPS
3.750
Water
0.005

15. Scenario-3 For US 301 Segment-1 Increased capacity Increased speed

16. Questions
Contact Sabya Mishra Assistant Professor Department of Civil Engineering University of Memphis