In a circular motion without any banking of road frictional force is the only force causing centripetal force right? But why does it act centrally? Without friction the vehicle will go straight as no centripetal force is present. But frictional always acts opposite to the direction of motion. So it must act opposite to the motion of the vehicle that is backwards and not centrally! Well this suggests there is no central force to make the vehicle move in circular direction. There is only backward force I think i am missing something. Where am i wrong?