Comprehensive Truck Size and Weight Limits Study - Compliance Comparative Analysis Technical Report

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Contact Information: FreightFeedback@dot.gov

June 2015

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Table of Contents

• Executive Summary
• Chapter 1. Introduction
  • 1.1 Background
  • 1.2 Purpose
  • 1.3 Context and Approach
  • 1.4 References
• Chapter 2. Compliance Estimation of Enforcement Cost
  • 2.1 Scope
  • 2.2 Methodology
  • 2.3 Results
  • 2.4 References
• Chapter 3. Compliance Effectiveness of Enforcement
  • 3.1 Scope
  • 3.2 Methodology
  • 3.3 Results
  • 3.4 References
• Appendix A. Revised Compliance Desk Scan
• Appendix B. Summary of Data Gathered from International Experts on Truck Size and Weight Enforcement
• Appendix C. Complete Project Plan
• Appendix D. Identification of Affected Statutes and Regulations
• Appendix E. Data Gathering Instrument for Incremental Time to Enforce Truck Weights

List of Tables

• Table ES-1. Truck Configurations and Weight Scenarios Analyzed in the 2014 CTSW Study
• Table 1. Performance Measures Used in this Report
• Table 2. Truck Configurations and Weight Scenarios Analyzed in the 2014 CTSW Study
• Table 3. States Included in Comparative Analysis
• Table 4. Summary of Current TSW Enforcement Technology Costs
• Table 5. Nationwide Truck Size and Weight Enforcement Program Costs for All Reporting States: 2008-2012
• Table 6. Nationwide Truck Size and Weight Enforcement Program Costs for 32 Reporting States: 2008-2012
• Table 7. Quantity of Weigh Scales by Scale Type for all 50 Reporting States: 2008 to 2012
• Table 8. Estimated Weighing Time for Single-Semitrailer Trucks by Scale Type
• Table 9. Estimated Weighing Time for Multiple-Trailer Trucks by Scale Type
• Table 10. Results of Enforcement Cost Scenario Analysis
• Table 11. Additional Non-WIM Weighings that Could Be Conducted Given Personnel Cost Savings by Scenario
• Table 12. Vehicle-specific Comparisons within the Compliance Assessment
• Table 13. Weight Limits for the Single-Semitrailer Truck Configurations Included in the Compliance Assessment
• Table 14. Weight Limits for the Multiple-Trailer Truck Configurations included in the Compliance Assessment
• Table 15. Nationwide Enforcement Outputs for All Reporting States: 2008-2012
• Table 16. Nationwide Number of Weighings for 44 Reporting States: 2008-2012
• Table 17. Nationwide Number of Citations for 44 Reporting States: 2008 - 2012
• Table 18. Nationwide Number of Permits Issued for 44 Reporting States: 2008-2012
• Table 19. Nationwide Weighing Cost-Efficiency for 35 Reporting States: 2008-2012
• Table 20. Nationwide Citation Statistics for 44 Reporting States: 2008-2012
• Table 21. Summary of Performance Measures for Comparison 1 (Scenario 2)
• Table 22. Summary of Performance Measures for Comparison 2 (Scenario 3)
• Table 23. Summary of Performance Measures for Comparison 3 (Scenario 5)
• Table 24. Summary of Performance Measures for Comparison 4 (Scenario 6)
• Table 25. System-Wide Compliance Outcomes Based on the Scenario Analysis
• Table 26. Expected Impacts on Enforcement Effectiveness by Scenario

List of Figures

• Figure 1. Difference Between 2008 and 2012 Total TSW Enforcement Costs by State
• Figure 2. Mean Annual Personnel Costs and Variability by State: 2008 to 2012
• Figure 3. Mean Annual Facilities Costs and Variability by State: 2008 to 2012
• Figure 4. Mean Annual Personnel and Facilities Costs and Cost Variability by State: 2008 to 2012
• Figure5. Number of Weigh Scales by Scale Type as a Function of Personnel Costs: 2011
• Figure 6. Total Enforcement Program Costs per Million Truck VMT: 2011
• Figure 7. Number of Weigh Scales per Million Truck VMT
• Figure 8. Weighings, Weight Violations, and Weight Citations
• Figure 9. Citation Rate as a Function of Enforcement Intensity: 2011
• Figure 10. Citation Rate as a Function of Enforcement Intensity and Weighing Method: 2011
• Figure 11. Citation Rate as a Function of Enforcement Intensity for At-limit and Above-limit States: 2011
• Figure 12. Citation Rate as a Function of Enforcement Intensity for At-limit and Above-limit States by Enforcement Method: 2011
• Figure 13. Performance Measures for the Comparison 1 Control Vehicle
• Figure 14. Performance Measures for the Comparison 1 Alternative Configuration
• Figure 15. Performance Measures for the Comparison 2a Control Vehicle
• Figure 16. Performance Measures for the Comparison 2a Alternative Configuration
• Figure 17. Performance Measures for the Comparison 2b Control Vehicle
• Figure 18. Performance Measures for the Comparison 2b Alternative Configuration
• Figure 19. Performance Measures for the Comparison 3 Control Vehicle
• Figure 20. Performance Measures for the Comparison 3 Alternative Configuration
• Figure 21. Performance Measures for the Comparison 4 Control Vehicle
• Figure 22. Performance Measures for the Comparison 4 Alternative Configuration

List of Acronyms

Acronym	Definition
AASHO	American Association of State Highway Officials
AASHTO	Association of State Highway and Transportation Officials
ABrR	AASHTOWare Bridge Rating®
ABS	anti-lock braking system
AC	asphalt concrete
ADT	average daily traffic
AADTT	annual average daily truck traffic
ADTT	average daily truck traffic
AF	axle factors
AGM	average gross mass
ALF	axle load factors
ARA	Applied Research Associates
ASLRRA	American Short Line and Regional Railroad Association
ASR	allowable stress rating
BTS	Bureau of Transportation Statistics
CAFT	constant-amplitude fatigue threshold
CARB	California Air Resources Board
CBO	Congressional Budget Office
CMV	commercial motor vehicle
CRCP	Continuously Reinforced Concrete Pavement
CRF	Code of Federal Regulations
CTSLW	Comprehensive Truck Size and Weight Limits Study
CTSW	Comprehensive Truck Size and Weight Limits
CVSA	Commercial Vehicle Safety Alliance
DA	data agreement
DOT	Department of Transportation
EDFs	equivalent damage factors
ESALs	equivalent single axle loads
ESAR	equivalent single-axle radius
ESWL	equivalent single-wheel load
FAF	Freight Analysis Framework
FEA	finite element analysis
FHWA	Federal Highway Administration
FMIS	Financial Management Information System
FMVSS	Federal Motor Vehicle Safety Standard
FRA	Federal Railroad Administration
GCW	gross combined weight
GEF	Group Equivalency Factor
GVW	gross vehicle weight
HCA	highway cost allocation
HCAS	Federal Highway Cost Allocation Study
HERS	Highway Economic Requirements Systems
HMA	hot mix asphalt
HPMS	Highway Performance Monitoring System
HV	High-volume
HIS	Interstate Highway System
ITIC	Intermodal Transportation and Inventory Cost Model
IRI	International Roughness Index
IS	Interstate System
ISTEA	Intermodal Surface Transportation Efficiency Act
JPCP	jointed plain concrete pavement
LCC	life cycle cost
LCV	longer combination vehicles
LEF	load equivalence factors
LFR	load factor rating
LRFD	load and resistance factor design
LRFR	load resistance factor rating
LTBP	Long-Term Bridge Performance Program
LTL	less than truckload
LTPP	Long-Term Pavement Performance
LV	Low-volume
MARAD	Maritime Administration
MATLAB	Matrix Laboratory
MCMIS	Motor Carrier Management Information System
MDDs	multidepth deflectometers
MEPDG	Mechanistic Empirical Pavement Design Guide
MV	Medium-volume
NAPCOM	National Pavement Cost Model
NAS	National Academy of Sciences
NATS	National Truck Stop Survey
NBI	National Bridge Inventory
NBMD	National Bridge Management Database
NCHRP	National Cooperative Highway Research Program
NDA	non-disclosure agreement
NESCCAF	Northeast States Center for a Clean Air Future
NHS	National Highway System
NHTSA	National Highway Traffic Safety Administration
NN	National Network
NREL	National Renewable Energy Lab
NSIs	normalized sensitivity indices
OMB	Office of Management and Budget
OGW	operating gross weight
ORNL	Oak Ridge National Laboratories
OOS	out-of-service
OS/OW	oversize/overweight
PBBT	Performance Based Brake Tests
PAS	Pavement Analysis Software
PBS	Performance-based standards
PCC	Portland Cement Concrete
PCE	passenger car equivalents
PCU	passenger car units
POG	Policy Oversight Group
PSI	Pounds per square inch
RC	reinforced concrete
RF	rating factor
SISSI	Superpave Instrumented Stress-Strain Investigation
SPS	Special Pavement Sections
STAA	Surface Transportation Authorization Act
STB	Surface Transportation Board
STCC	Standard Transportation Commodity Code
SwRI	Southwest Research Institute
TF	truck factor
TMG	Traffic Monitoring Guidelines
TOC	Technical Oversight Committee
TRB	Transportation Research Board
TSW	truck size and weight
TTCGS	truck traffic classification groups
USC	United States Code
USDOT	US Department of Transportation
VMT	vehicle miles traveled
VIUS	Vehicle Inventory and Use Survey
VSC	vehicle stability and control
WHVC	World Harmonized Vehicle Cycle
WIM	weigh-in-motion
WIMPI	Weigh-in-Motion Pavement Investigation

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