Motorcycle accidents are similar to other types of car accidents in many ways—any personal injury allegation whose results will be dealt with under California's comparative negligence rules. An at-fault defendant — most commonly a driver, though other parties can also be held legally responsible for the victim's losses — can be held legally liable for the victim's losses. In all motorcycle and car accidents, the person who was hurt needs a good lawyer to do a thorough investigation, find all the responsible parties and insurance sources, figure out how much they lost, and fight for full compensation.