Highway Statistics 2021
User's Guide
1. Executive Summary
2. Introduction (PS-1)
| 2.1. Selected measures for identifying peer states | PS-1 |
3. Bridges
| 3.1. Overview | |||
| 3.2. National tables | |||
| 3.2.1. Bridges by Wearing Surface | BR-3 | ||
| 3.2.2. Bridge by Year Built | BR-4 | ||
| 3.2.3. Count, Area, Length of Bridges by Highway System | BR-5 | ||
| 3.2.4. Highway Bridge by Owner | BR-6 | ||
| 3.2.5. Material Type of Structure by State | BR-7 | ||
| 3.2.6. Count of Bridges by Structure Type | BR-8 |
4. Highway Infrastructure
| 4.1. Overview | |||
| 4.2. Multi-year trends & charts | |||
| 4.2.1. Public Road Mileage and VMT, 1920 - 2020 - Chart | VMT-421C | ||
| 4.2.2. Public Road Mileage, Lane Miles and VMT, 1980 - 2021 - Chart | VMT-422C | ||
| 4.2.3. Public road mileage by functional system, 1980 - 2021 | HM-220 | Excel | |
| 4.2.4. Public road lane-miles by functional system, 1980 - 2021 | HM-260 | Excel | |
| 4.3. National tables | |||
| 4.3.1. Public road length by type of surface and ownership/functional system | HM-12 | ||
| 4.3.2. Public road length by ownership and Federal-aid highways | HM-16 | ||
| 4.3.3. Public road length by functional system and Federal-aid highways | HM-18 | Excel | |
| 4.3.6. Functional system length by lane width, access control, and average daily traffic volume | HM-59 | ||
| 4.4. State tables | |||
| 4.4.1. Public roads | |||
| 4.4.1.1. Length by ownership | HM-10 | ||
| 4.4.1.2. Length by functional system | HM-20 | Excel | |
| 4.4.1.3. Length by functional system and ownership | HM-50 | ||
| 4.4.1.4. Estimated lane-miles by functional system | HM-60 | Excel | |
| 4.4.2. Federal-aid Highway System | |||
| 4.4.2.1. Length by ownership | HM-14 | ||
| 4.4.2.2. Length by functional system | HM-15 | ||
| 4.4.2.6. Estimated lane-miles | HM-48 | Excel | |
| 4.4.3. National Highway System | |||
| 4.4.3.1. Length by open and not open to traffic | HM-30 | Excel | |
| 4.4.3.2. Length by ownership | HM-40 | ||
| 4.4.3.3. Length by functional system | HM-41 | Excel | |
| 4.4.3.4. Lane-miles by functional system | HM-43 | Excel | |
| 4.4.3.5. Strategic Highway Network (STRAHNET) length | HM-49 | ||
| 4.4.4. Arterial and Collectors | |||
| 4.4.4.1. Length by type of surface | HM-51 | ||
| 4.4.4.2. Length by lane width | HM-53 | ||
| 4.4.4.3. Length by traffic lanes and access control | HM-55 | ||
| 4.4.5. Urbanized area summaries | |||
| 4.4.5.1. Length and daily vehicle-miles of travel | HM-71 | Excel | |
| 4.4.5.2. Selected characteristics | HM-72 | Excel | |
| 4.4.6. State highway agency-owned public roads | |||
| 4.4.6.1. Estimated length by functional system | HM-80 | ||
| 4.4.6.2. Estimated lane-miles | HM-81 |
5. Highway Travel
| 5.1. Overview | |||
| 5.2. Multi-year trends & charts | |||
| 5.2.1 Vehicle-miles of travel, by functional system, 1980-2021 | VM-202 | Excel | |
| 5.3. National tables | |||
| 5.3.1. Vehicle miles of travel and related data, by highway category and vehicle type | VM-1 | Excel | |
| 5.4. State tables | |||
| 5.4.1. Vehicle-miles of travel, by functional system | VM-2 | Excel | |
| 5.4.2. Vehicle-miles of travel, by Federal-aid highways | VM-3 | Excel | |
| 5.4.3. Distribution of Annual Vehicle Distance Traveled | VM-4 | Excel | |
| 5.4.4. Vehicle miles of travel by functional system | HM-44 | Excel | |
| 5.4.5. Length by average daily traffic volume, Federal-aid highways | HM-37 | ||
| 5.4.6. Length by average daily traffic volume, Arterials and Collectors | HM-57 |
6. Travelers (or System Users)
| 6.1. Overview | |||
| 6.2. Multi-year trends & charts | |||
| 6.2.1. Licensed drivers, vehicle registrations, and resident population - Chart | DV-1C | Excel | |
| 6.2.2. Licensed drivers, by State, 1949-2021 | DL-201 | Excel | |
| 6.2.3. Licensed drivers by sex and age group, 1963-2021 | DL-220 | Excel | |
| 6.3. State tables | |||
| 6.3.1. Licensed drivers--Ratio of licensed drivers to population | DL-1C | Excel | |
| 6.3.2. Licensed drivers, by sex and percentage in each age group | DL-20 | Excel | |
| 6.3.3. Licensed drivers, by State, sex, and age group | DL-22 | Excel |
7. Vehicles
| 7.1. Overview | |||
| 7.2. National tables | |||
| 7.2.1. Vehicle registrations, fuel consumption, and vehicle miles of travel - Chart | RC-1C | Excel | |
| 7.3. State tables | |||
| 7.3.1. State motor-vehicle registrations Published: February 2023 | Revised: October 2023 | MV-1 | Excel | |
| 7.3.2. Publicly owned vehicles Published: February 2023 | Revised: October 2023 | MV-7 | Excel | |
| 7.3.3. Truck and truck-tractor registrations | MV-9 | ||
| 7.3.4. Bus registrations Published: December 2022 | Revised: October 2023 | MV-10 | Excel | |
| 7.3.5. Trailer and semi-trailer registrations (temporarily suspended) | MV-11 | ||
| 7.3.6. State motor-vehicle and motor-carrier tax receipts (temporarily suspended) | MV-2 | ||
| 7.3.7. Disposition of State motor-vehicle and motor-carrier tax receipts | MV-3 | Excel |
8. Motor Fuel
9. Revenue
10. Debt Obligations for Highways
| 10.1. Overview | |||
| 10.2. Multi-year trends & charts | |||
| 10.3. National tables | |||
| 10.3.1. Long-term highway obligations for all units of government | HB-2 | Excel | |
| 10.4. State tables | |||
| 10.4.1. State Obligations for Highway (total), issued or assumed during year | SB-1 | Excel | |
| 10.4.2. Change in indebtedness, state highways | SB-2 | Excel | |
| 10.4.3. Change in indebtedness, local highways | SB-2L | Excel | |
| 10.4.4. Change in indebtedness, toll roads and crossings | SB-2T | Excel | |
| 10.4.5. Funding for debt service, state highways | SB-3 | Excel | |
| 10.4.6. Funding for debt service, local highways | SB-3L | ||
| 10.4.7. Funding for debt service, toll roads and crossings | SB-3T | Excel | |
| 10.5. Local tables | |||
| 10.5.1. Change in indebtedness, local highways | LGB-2 | Excel | |
| 10.5.2. Change in indebtedness, local toll facilities | LGB-2T | Excel |
11. Apportionments, Obligations, and Expenditures
12. Conditions and Safety
| 12.1. Overview | |||
| 12.2. Multi-year trends & charts | |||
| 12.2.1. Motor vehicle traffic fatalities (1900 - 2020) | FI-200 | ||
| 12.2.2. Summary of persons fatally injured in motor vehicle crashes, by Federal-aid highways | FI-210 | ||
| 12.2.3. Summary of persons fatally injured in motor vehicle crashes, by Functional system | FI-220 | ||
| 12.3. National tables | |||
| 12.3.1. Fatality rate per 100 million annual VMT by Functional system | FI-30 | ||
| 12.4. State tables | |||
| 12.4.1. Length by present serviceability rating (pavement condition)/measured pavement roughness—Major Collectors and Urban Minor Arterials and Collectors | HM-63 | ||
| 12.4.2. Length by measured pavement roughness—All Principal Arterials and rural Minor Arterials | HM-64 | ||
| 12.4.3. Pavement roughness details | HM-66 | ||
| 12.4.4. Miles by Measured Pavement Roughness | HM-47B | ||
| 12.4.5. Miles by Measured Pavement Rutting (Inches) | HM-47C | ||
| 12.4.6. Miles by Measured Pavement Faulting (Inches) | HM-47D | ||
| 12.4.7. Miles by Measured Pavement Cracking Percent | HM-47E | ||
| 12.4.8. Miles by Measured Pavement Rutting (Inches) | HM-47F | ||
| 12.4.9. Miles by Measured Faulting Faulting (Inches) | HM-47G | ||
| 12.4.10. Miles by Measured Pavement Cracking Percent | HM-47H | ||
| 12.4.11. Miles by Measured Pavement Roughness / Present Serviceability Rating | HM-47I | ||
| 12.4.12. Persons fatally injured in motor vehicle crashes, by Federal-aid highways | FI-10 | ||
| 12.4.13. Persons fatally injured in motor vehicle crashes, by Functional system | FI-20 | ||
| 12.5. Urbanized area summaries | |||
| 12.5.1. Functional system length, miles by measured pavement roughness / present serviceability rating | HM-73 | ||
| 12.5.2. Functional system travel, daily vehicle - miles of travel by measured pavement roughness / present serviceability rating | HM-74 |
13. Performance Indicators
| 13.1. Overview | |||
| 13.2. Multi-year trends & charts | |||
| 13.2.1. System travel density trends (weighted average AADT per lane) - Chart | TC-201C | ||
| 13.3. State tables | |||
| 13.3.1. Length by volume-service flow ratio, NHS | HM-42 | ||
| 13.3.2. Length by measured pavement roughness, NHS | HM-47 | ||
| 13.3.3. Daily travel by measured pavement roughness, NHS | HM-47A | ||
| 13.3.4. Length by volume-service flow ratio, all functional systems | HM-61 | ||
| 13.3.5. Weighted average daily traffic per lane | HM-62 | Excel |
14. International and Metric
| 14.1. Overview | |||
| 14.2. International Tables | |||
| 14.2.1. Motor Fuel Tax Rates for Selected Countries | IN-1 | Excel | |
| 14.2.2. Social and Demographic Characteristics for Selected Countries | IN-2 | ||
| 14.2.3. Road System Measures for Selected Countries (Metric) | IN-3 | ||
| 14.2.4. Transportation Indicators for Selected Countries (Metric) | IN-4 | ||
| 14.2.5. Vehicle Travel by Selected Country (Metric) | IN-5 | ||
| 14.3. Metric Tables | |||
| 14.3.1. Public road length by type of surface and ownership/functional system (metric) | HM-12M | ||
| 14.3.2. Public road length by ownership and Federal-aid highways (metric) | HM-16M | ||
| 14.3.3. Public road length by functional system and Federal-aid highways (metric) | HM-18M | Excel | |
| 14.3.4. Federal-aid length by traffic lanes and access control (metric) | HM-36M | ||
| 14.3.5. Length by ownership (metric) | HM-10M | ||
| 14.3.6. Length by functional system (metric) | HM-20M | Excel | |
| 14.3.7. Length by functional system and ownership (metric) | HM-50M | ||
| 14.3.8. Estimated lane-miles by functional system (metric) | HM-60M | Excel | |
| 14.3.9. Length by ownership (metric) | HM-14M | ||
| 14.3.10. Length by functional system (metric) | HM-15M | ||
| 14.3.11. Length by open and not open to traffic (metric) | HM-30M | Excel | |
| 14.3.12. Vehicle-miles of travel, by Federal-aid highways (metric) | VM-1M | ||
| 14.3.13. Vehicle-miles of travel, by Federal-aid highways (metric) | VM-2M | Excel | |
| 14.3.14. Vehicle-miles of travel, by functional system (metric) | VM-3M | Excel | |
| 14.3.15. Motor-fuel use (metric) | MF21-M |
15. Footnotes
16. Glossary
17. Appendices
| 17.1. Appendix A: Original Tables (original format for modified tables) | |||
| 17.2. Appendix B: Discontinued Tables | |||
| 17.2.1. Revenues used by States for local roads and streets | SF-5 | ||
| 17.2.2. Receipts and expenditures for highways by Federal agencies-summary 2007 revised | FA-5R | ||
| 17.2.3. Summary receipts and expenditures for highways | FA-21 | ||
| 17.2.4. Selected data used in apportionments for Fiscal Year 2014 | FA-4E | ||
| 17.2.5. Federal-aid highway fund allocations | FA-4D | ||
| 17.2.6. Growth in volumes and loadings on the Interstate system - Chart | TC-202C | ||
| 17.2.7. Federal-aid length by traffic lanes and access control | HM-36 | ||
| 17.2.8. Federal-aid length by lane width, access control, and average daily traffic volume | HM-39 | ||
| 17.2.9. Tolled Roadway Length | HM-25 | ||
| 17.2.10. Length by type of surface | HM-31 | ||
| 17.2.11. Length by lane width | HM-33 | ||
| 17.2.12. Length by traffic lanes and access control | HM-35 | ||
| 17.2.13. Vehicle-miles of travel, by Federal-aid highways, 1957-2012 | VM-203 | ||
| 17.2.14. Summary Statistics on Demographic Characteristics and Total Travel 1969,1977,1983,1990, 1995 NPTS and 2001 NHTS | NT-1 | ||
| 17.2.15. Changes in Travel Demand, 1969-2001 | NT-2 | ||
| 17.2.16. Number of Vehicle Trips by Time of Day | NT-3 | ||
| 17.2.17. Number of Weekday Workers by Chain Type | NT-4 | ||
| 17.2.18. Average Vehicle Trip Lengths | NT-5 | ||
| 17.2.19. Household-Based Fleet Characteristics | NT-6 | ||
| 17.2.20. Funding for direct State mass transit activities | MT-1A | ||
| 17.2.21. Funding for State grants-in-aid for mass transit | MT-1B |