The new “turbo roundabout” at the intersection of highways 25 and 156, in Hollister, Calif., on Friday, Dec. 29, 2023, during its construction. (Shae Hammond/Bay Area News Group) ...

The “turbo roundabout” at the intersection of highways 25 and 156 in Hollister, Calif., on Tuesday, April 1, 2025. (Nhat V. Meyer/Bay Area News Group) ...

A new turbo roundabout is seeing triple the rate of accidents then the year before it was constructed, but experts say decreasing rates of injury prove that the new intersection is safer.