What is the leading cause of deadly crashes in California?

NHTSA and CHP data show speeding and impaired driving – both alcohol and drugs – as the primary factors in fatal crashes, often combined with distraction or failure to wear seatbelts. Distracted driving is believed to be heavily undercounted in official reports because it is difficult to prove without phone records or a driver’s admission. Facilitating grants for enforcement programs and better data collection from the California Office remains a priority.