State Route 520 (SR 520)
Connecting Seattle to Redmond, SR 520 is notorious for heavy traffic and frequent accidents, especially during rush hours.
Interstate 5 (I-5)
Running through the heart of Washington, I-5 is a major highway with high traffic volumes and a history of serious collisions.
State Route 167 (SR 167)
Serving the Puget Sound region, SR 167 is known for congestion and hazardous conditions, contributing to numerous accidents.
US Route 2 (US 2)
US 2 in northern Washington is accident-prone due to curving roads and bad weather.
State Route 522 (SR 522)
Connecting Seattle to Monroe, SR 522 faces heavy traffic and has been a site of various accidents in recent years.