Category: Analysis & Data

Connected and Autonomous Vehicle Technology: Determining the Impact on State DOT Maintenance Programs

  • August 1st, 2025

Traffic control devices, markings, signals, guardrail, computing systems, communications infrastructure, and other permanent and temporary devices will likely each be affected by the operation of connected and autonomous vehicle (CAV) technology. State departments of transportation (DOTs) need to identify gaps in knowledge and skills and prepare for the challenges of CAV implementation while maintaining the […]

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Occupant Protection in Passenger Vehicles

  • August 1st, 2025

This fact sheet discusses occupant protection including seat belts, car seats for children under 5 years old, and frontal air bags in passenger vehicles. These are passenger cars and light trucks (pickups, SUVs, and vans) with gross vehicle weight ratings of 10,000 lb or less. Vehicle occupants are drivers and passengers. Read the fact sheet […]

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Data Integration, Sharing, and Management for Transportation Planning and Traffic Operations

  • August 1st, 2025

Planning and operating transportation systems involves the exchange of large volumes of data that must be shared between partnering transportation agencies, private-sector interests, travelers, and intelligent devices such as traffic signals, ramp meters, and connected vehicles. NCHRP Research Report 1121: Data Integration, Sharing, and Management for Transportation Planning and Traffic Operations, from TRB’s National Cooperative […]

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2023 Traffic Safety Facts: Large Trucks

  • July 15th, 2025

This fact sheet contains information on fatal motor vehicle traffic crashes based on data from the Fatality Analysis Reporting System (FARS) and non-fatal motor vehicle traffic crashes from the National Automotive Sampling System (NASS) General Estimates System (GES) and Crash Report Sampling System (CRSS). Results from FARS, such as fatal crashes and fatalities, are actual […]

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2023 Traffic Safety Facts: Children

  • July 15th, 2025

This fact sheet contains information on fatal motor vehicle traffic crashes based on data from the Fatality Analysis Reporting System (FARS) and non-fatal motor vehicle traffic crashes from the Crash Report Sampling System (CRSS). Results from FARS, such as fatal crashes and fatalities, are actual counts, while results from CRSS, such as non-fatal crashes and […]

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Early Estimate of Motor Vehicle Traffic Fatalities in 2024

  • July 2nd, 2025

A statistical projection of traffic fatalities for 2024 shows an estimated 39,345 people died in motor vehicle traffic crashes, a decrease of about 3.8 percent compared to the 40,901 fatalities reported to have occurred in 2023, as shown in Table 1. The fourth quarter of 2024 represents the 11th consecutive quarterly decline in fatalities beginning […]

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Pedestrian Fatalities on Urban Arterial Roads at Night: An In-Depth Crash Analysis and Three Case Studies

  • May 2nd, 2025

The number of pedestrians killed on U.S. roads and streets has increased by more than 80% since reaching its modern-era record low in 2009. While the contributions of factors such as vehicle size and driver behavior have been the subject of extensive research, two additional factors also stand out: time of day and location. Virtually […]

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TRANSPORTATION STATISTICS ANNUAL REPORT 2024

  • April 4th, 2025

Transportation is fundamental to the vibrancy of the Nation and facilitates economic prosperity and quality of life. It enables people to engage in productive pursuits and experience the social interactions that take full advantage of geographic specialization and diffusion. An efficient and resilient transportation system and its seamless operation underpin the overall efficiency and resilience […]

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Quantitative Safety Analyses for Highway Applications

  • April 4th, 2025

Development of the AASHTO Highway Safety Manual began from a TRB conference session and a workshop, both held in 1999, that identified the need for a traffic safety document analogous to the role of the Highway Capacity Manual for traffic operations. NCHRP Research Report 1140: Quantitative Safety Analyses for Highway Applications, from TRB’s National Cooperative Highway Research Program, describes […]

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