Fair weather limited access highways is one of many datasets available. However, Autopilot operates in wet and rainy conditions so that’s hardly an accurate assessment. Weather bad enough to prevent autopilot is a contributing factor ~5% of accidents.
“On average, there are over 5,891,000 vehicle crashes each year. Approximately 21% of these crashes - nearly 1,235,000 - are weather-related” “ 70% on wet pavement and 46% during rainfall. A much smaller percentage of weather-related crashes occur during winter conditions: 18% during snow or sleet, 13% occur on icy pavement and 16% of weather-related crashes take place on snowy or slushy pavement. Only 3% happen in the presence of fog.”
“On average, there are over 5,891,000 vehicle crashes each year. Approximately 21% of these crashes - nearly 1,235,000 - are weather-related” “ 70% on wet pavement and 46% during rainfall. A much smaller percentage of weather-related crashes occur during winter conditions: 18% during snow or sleet, 13% occur on icy pavement and 16% of weather-related crashes take place on snowy or slushy pavement. Only 3% happen in the presence of fog.”
https://ops.fhwa.dot.gov/weather/q1_roadimpact.htm