King County produces traffic safety reports annually in an ongoing effort to reduce the number and severity of vehicle collisions on county roadways. The reports track collision trends and assess the effectiveness of safety programs utilized by the county. The reports also detail information that is useful in determining how limited safety funds should be used and steps that can be taken to improve the safety of the traveling public.

• 2023 Traffic Safety Report (792KB)
• 2022 Traffic Safety Report (1MB)
• 2021 Traffic Safety Report (800KB)
• 2020 Traffic Safety Report (828KB)
• 2019 Traffic Safety Report (818KB)
• 2018 Traffic Safety Report (1MB)