Is a motor vehicle driver required to stop and render aid to a pedestrian injured in a collision?

The statutory requirement that drivers of vehicles involved in accidents resulting in injury or death must stop and render aid "was enacted for the protection of persons injured in an accident, and was designed to prohibit drivers, under pain of punishment, from leaving such persons in distress and danger for want of proper medical or surgical treatment. Reasonable and prompt assistance may prevent aggravation of or further injuries, or may save a life. These are but humanitarian acts required to be performed by all drivers of vehicles involved in accidents causing injuries, whether or not they are responsible for the accident. [Citations.]" (Bailey v. Superior Court (1970) 4 Cal.App.3d 513, 520-521.)