At least Scenario 2 should be much easier for self driving cars to manage than humans since they can (at least in theory) monitor the dampness, temperature and

At least Scenario 2 should be much easier for self driving cars to manage than humans since they can (at least in theory) monitor the dampness, temperature and traction of the road they are on in real time. There are camera systems today that can detect black ice with combination of IR and image recognition, and in the future there might be systems like that along most roads that can send real time updates about upcoming hazards directly to the car. Scenario 3 is functionally no different than a truck driving slowly and weaving back and forth erratically, something that should be part of the standard scenarios any self driving car should handle. Scenario 1 is almost certainly the hardest one and the one that will take longest to solve.