Crash Investigation Sampling System 2024 Analytical User’s Manual

The Crash Investigation Sampling System is a national traffic crash database of comprehensive traffic crash data on police-reported motor vehicle crashes in the United States during the year involving passenger cars, light trucks, and light vans that were towed. Non-motorist crashes were added in 2024 to the crashes researched by CISS. This manual is an overview of the CISS sampling scheme and file structure. This manual and the NHTSA Field Crash Investigation 2024 Coding and Editing Manual and the NHTSA Field Crash Investigation 2024 Non-Motorist Coding and Editing Manual are the primary documentation supporting the 2024 CISS data file.