VEHICLE OPERATION AROUND OBSTACLES

A computer includes a processor and a memory, and the memory stores instructions executable by the processor to determine a threat number based on sensor data indicating an obstacle, the threat number representing a risk of an impact between a vehicle and the obstacle; formulate a control barrier function based on sensor data indicating the obstacle; determine a control input based on an expression including the control barrier function and the threat number; and actuate a component of the vehicle according to the control input.