Waymo is allowed to test at all hours, in rain and light fog, within a limited geographic area.
[0] https://news.ycombinator.com/item?id=28710098
The permitted taxi service allows them to scale up and charge a profitable fare. In the testing phase, their fares are severely reduce.
Cruise can charge full price without a driver, but Waymo only has the permit for a backup driver at full proce.
Waymo is allowed to test at all hours, in rain and light fog, within a limited geographic area.
[0] https://news.ycombinator.com/item?id=28710098