A motorcyclist died Tuesday afternoon after colliding with a semi-truck in Stockton.
The crash happened around 2:14 p.m. on the ramp from eastbound State Route 120 to northbound Highway 99.
Officers say the rider tried to pass the truck on the right, unsafely.
CHP Officer James Smith also told FOX40 that the semi kept going. Investigators are working to figure out if the truck continued down the road on purpose.