Adverse weather conditions are a leading cause of traffic accidents, contribute to America's congested roads, and slow down the movement of people and goods.

New innovations and technology — developed through partnerships among federal agencies, private companies and universities — offer the promise of safer driving in all types of weather. Pilot projects are incorporating data from networks of connected vehicles and road sensors to provide decision support to transportation departments working to keep the roads clear and commerce flowing. As driverless vehicles come on the scene, the challenges mount. How these vehicles incorporate weather information and forecasts will be crucial to safe navigation and the future mobility of society.

— April 2019