FAF2 FREIGHT TRAFFIC ANALYSIS
Prepared by:
Maks Alam, P.Eng.
Principal Investigator and Author
Dr. Edward Fekpe, P.Eng.
Contributing Author
Mohammed Majed
Researcher
Battelle
Submitted to:
Office of Freight Management and Operations (HOFM)
Federal Highway Administration
Washington, D.C.
June 27, 2007
Table of Contents
1.2 Objectives of FAF2 Project
1.3 Objectives of FAF2 Freight Traffic Analysis
1.4 Overview of the Methodology
1.5 Organization of the Report
CHAPTER 2: FAF2 FREIGHT NETWORK DEVELOPMENT
2.2 NHPN Version 2005.10 – The Source Network
2.3 Linking HPMS Data to the FAF2 Highway Network
2.3.1 Update FAF2 LRS Schema with HPMS LRS Data Schema
2.3.2 Load HPMS Traffic and Roadway Performance Data
2.3.3 Spreading HPMS Section Data to the FAF2 Network Link
2.3.4 Assigning Data for Non-HPMS FAF2 Network Links
2.3.5 Quality Assurance Analysis
2.4 Summary of Freight Network Development
CHAPTER 3: DEVELOPMENT
OF TRUCK PAYLOAD EQUIVALENCY
FACTOR
3.2 Tonnage to Truck Payload Conversion Process
3.2.2 Commodity to Truck Body Type Allocation
3.2.3 Payload Estimation and Validation
3.2.4 ; Tons-to-Truck Trips Conversion
3.3 Empty Truck Percent Estimation
CHAPTER 4: FAF2 TRUCK O-D DATA DISAGGREGATION
4.2 FAF2 O-D Data Disaggregation Process
4.2.1 & Develop Allocate FAF2 Freight Tonnage O-D to Vehicle Classes
4.2.2 Develop and Generate Freight Trip Activity Centers
4.2.3 Disaggregate FAF2 O-D Truck Trips to Freight Activity Centers
CHAPTER 5: FREIGHT TRUCK ASSIGNMENT AND CALIBRATION
5.3 Assignment Algorithm and Calibration
5.3.2 Freight Assignment Calibration
CHAPTER 6: CAPACITY AND PERFORMANCE ANALYSIS
6.2.5 Travel Time, Speed and Delay
6.4 Highway Impact on Truck Traffic
List of Tables
Table 2.1: Relationship Between HPMS LRS Milepost and NHPN Node
Table 2.2: HPMS Data Elements Used in the Study
Table 2.3: FAF2 Network Missing Data Lookup Tables
Table 3.1: Results of Vehicle Weight Validation
Table 3.2: Results of Variation Analysis
Table 3.3: Truck Equivalent Factors Used in FAF2 Tonnage to Truck
Table 3.4: Summary of Percent Empty Trucks
Table 4.1: Tonnage Allocation Distribution Matrix by Distance
Table 4.2: CFS Zone to CFIPS FAZ Disaggregated Freight Share
Table 4.3: CFIPS FAZ to FAF Network Freight Activity Node Disaggregated Freight Share
Table 5.1: Speed Limits (mph) for Missing HPMS Speed Data
Table 5.2: Results of Calibration
Table 6.1: J Value for Multilane, Freeway, and Rural FAF Highway Links
Table 6.2: J values for Urban FAF Highway Links
Table 6.3: Summary Statistics of Capacity Analysis
Table 6.4: Miles of Highway by Truck Volume Groups
List of Figures
Figure 1.1: Building Blocks of FAF2 Freight Traffic Analysis
Figure 2.1: HPMS Data Chain or Network Topological Direction
Figure 2.2: Network Flow Direction “One-Way” Pairs
Figure 2.3: Alaska Highway Connection to Mainland USA via Canada
Figure 2.4: Data Capture Procedure
Figure 2.5: Aggregation of Traffic Data
Figure 2.6: HPMS 2002 Truck Volume on FAF2 Network
Figure 3.1: Steps in Conversion Process
Figure 3.2: Selected Major Body Types
Figure 3.3: Configurations of Vehicle Groups and Samples of Body Types
Figure 3.4: VIUS and VTRIS Mean Weight Comparison
Figure 3.5: Cumulative Distribution of Percent of Miles Empty
Figure 3.6: Percent of Miles Empty by Body Type
Figure 4.1: FAF2 Ton to Truck Data Conversion Process
Figure 4.2: FAF2 Disaggregated Freight Activity Centers used for Assignment
Figure 4.3: Overall Disaggregation Process
Figure 5.1: Comparison of AON and SUE Truck Traffic Assignment
Figure 5.2: HPMS 2002 Truck Flow on FAF2 Highway Network
Figure 5.3: Base Year 2002 FAF2 Truck Flow on FAF2 Highway Network
Figure 5.4: Year 2035 FAF2 Truck Flow on FAF2 Highway Network
Figure 6.1: NHS Highway Network Congestion for Year 2002
Figure 6.2: NHS Highway Network Congestion for Year 2035
Figure 6.3: NHS Highway Miles Exceeding Capacity
Figure 6.4: Percentage of NHS Highway Miles Exceeding Capacity
Figure 6.5: NHS interstate Highway Miles by Capacity Categories
Figure 6.6: NHS Miles of Roadway by Truck Traffic (AADTT) Groups
Figure 6.7: Interstate Miles of Roadway by Truck Traffic (AADTT) Groups
Figure 6.8: NHS Non-Interstate Miles of Roadway by Truck Traffic (AADTT) Groups
